%! %%Creator: troff->tpscript %%CreationDate: Wed Sep 15 07:58:39 1993 %%EndComments /inch { 480 mul } bind def /rotateit { /pgtop 11 inch def /pgwid 8.5 inch def newpath } bind def /scaleit { 72 480 div dup scale rotateit 0 setlinecap} def /unscaleit { 480 72 div dup scale} def /RBKFontDict 9 dict def /NEWDict 10 dict def RBKFontDict begin /FontType 3 def /FontName (RBK specials) cvn def /FontMatrix [ 0.001 0 0 0.001 0 0] def /FontBBox [ -50 -250 1000 1000 ] def /Encoding 256 array def 0 1 255 { Encoding exch /.notdef put } for Encoding dup 2 /Csq put dup 3 /Cci put dup 4 /Cbx put dup 5 /CSu put dup 15 /Cbu put pop /CharProcs 24 dict dup begin /setC { 0 -50 -250 1000 1000 setcachedevice} def /Cbu { 0 0 moveto 600 setC 300 300 moveto 300 300 250 0 360 arc closepath fill } def /Csq { 0 0 moveto 600 setC 50 50 moveto 500 0 rlineto 0 500 rlineto -500 0 rlineto closepath fill } def /Cbx { 0 0 moveto 600 setC 70 setlinewidth 50 50 moveto 500 0 rlineto 0 500 rlineto -500 0 rlineto closepath stroke } def /Cci { 0 0 moveto 600 setC 70 setlinewidth 550 300 moveto 300 300 250 0 360 arc closepath stroke } def /CSu { 0 0 moveto 715 setC 700 700 scale %% Kolstad & Horton/Polk 12/1989; Font: kolstad 6/24/90 /divsq2 { 1.4142136 div } bind def /mulsq2 { 1.4142136 mul } bind def /TW 0.62 def %% top width /MG 0.12 def %% MidGap /US TW 4 mul MG 6 mul add def %% Uside /UL US TW sub MG sub def %% U length /OR MG TW add def %% outradius /T2 TW divsq2 def /U2 UL divsq2 def /M2 MG divsq2 def /SU { %% sunU currentpoint T2 dup neg rlineto U2 neg dup rlineto currentpoint exch M2 add exch M2 sub MG 135 315 arc U2 dup rlineto T2 dup neg rlineto U2 neg dup rlineto currentpoint exch OR divsq2 sub exch OR divsq2 add OR 315 135 arcn closepath moveto } def /SU2 { SU currentpoint 0 US neg mulsq2 rmoveto 180 rotate SU -180 rotate moveto } def 1 US mulsq2 2 mul div dup scale US divsq2 US mulsq2 US divsq2 add rmoveto 4 { M2 2 mul M2 2 mul rmoveto US mulsq2 0 rmoveto 270 rotate SU2 } repeat %% 0 setlinewidth stroke fill } def end def /BuildChar { NEWDict begin /charcode exch def /fontdict exch def fontdict /CharProcs get begin fontdict /Encoding get charcode get load gsave 0 setlinecap 0 setgray newpath exec grestore end end } def end /RBKFont RBKFontDict definefont pop %%%%%%%%%%%%%%% End special Font scaleit 0 0 moveto /pagebot { showpage restore } def /pagetop { save } def /lastpage {} def /pt { 6.666667 mul } bind def /y { neg 0 exch rmoveto } bind def /X { U moveto } bind def /Y { pgtop exch sub currentpoint pop exch dup /U exch def moveto } bind def /s { show } bind def /S { dup gsave show grestore gsave true charpath 0 setgray stroke grestore } bind def /D { currentpoint stroke moveto } def /l { neg rlineto currentpoint /U exch def pop } bind def /c { 2 div /rad exch def currentpoint /y0 exch def /x0 exch def newpath x0 rad add y0 rad 0 360 arc stroke x0 rad add rad add y0 dup /U exch def moveto } def /a { /y2 exch neg def /x2 exch def /y1 exch neg def /x1 exch def currentpoint y1 add exch x1 add exch x2 x2 mul y2 y2 mul add sqrt y1 neg x1 neg atan y2 x2 atan arc currentpoint /U exch def pop } def /e { 2 div /yrad exch def 2 div /xrad exch def currentpoint /y0 exch def /x0 exch def gsave x0 xrad add y0 translate xrad yrad scale LS xrad yrad gt {xrad} {yrad} ifelse div setlinewidth newpath 0 0 1 0 360 arc stroke grestore x0 xrad add xrad add y0 dup /U exch def moveto } def /spln { rcurveto currentpoint /U exch def pop } def % stolen from greenbook page 115-116 /F { findfont exch scalefont setfont } bind def /RE { % re-encode findfont begin currentdict dup length dict begin { 1 index /FID ne {def} {pop pop} ifelse } forall /FontName exch def dup length 0 ne { % if /Encoding Encoding 256 array copy def 0 exch { % forall dup type /nametype eq % if? { Encoding 2 index 2 index put pop 1 add } { exch pop } ifelse } forall } if pop currentdict dup end end /FontName get exch definefont pop } bind def % use make.remap to make new stdencodings: /stdencoding [ 1 /multiply /ntilde /eth /otilde /oacute /idieresis /Ocircumflex /ograve /onequarter /scaron /uacute /odieresis /Ucircumflex /ugrave /yacute /Thorn /zcaron /udieresis /threequarters /threesuperior /ydieresis /aring /Ccedilla /twosuperior /acircumflex /Atilde /Aacute /Agrave /ecircumflex /Eacute /copyright 127 /Adieresis /Egrave /icircumflex /Iacute /onehalf /Edieresis /Igrave /Ntilde /Eth /ocircumflex /Otilde /Oacute /Idieresis /mu /Ograve /Scaron /ucircumflex /Uacute /Odieresis /Ugrave /Yacute /thorn /degree /logicalnot /minus /Zcaron /Udieresis /registered /plusminus /ccedilla /Ydieresis /Aring /atilde /aacute 176 /Acircumflex 181 /divide 190 /brokenbar 192 /agrave 201 /eacute 204 /Ecircumflex 209 /adieresis /egrave /onesuperior /trademark /iacute /Icircumflex /edieresis /igrave ] def /specdwidth 0 def /LS 0 def /setwidth {/specdwidth 1 def dup /LS exch def setlinewidth} def /ft { /fonttype exch def /xsiz exch def /ysiz exch def /sl exch def fonttype [ xsiz pt 0 sl sin sl cos div ysiz pt mul ysiz pt 0 0 ] makefont setfont specdwidth 0 eq {xsiz 4 div dup /LS exch def setlinewidth} if setgray } def /Z { specdwidth 0 eq {dup 4 div dup /LS exch def setlinewidth} if pt scalefont setfont } bind def /M { pgtop exch sub moveto } bind def /L { pgtop exch sub lineto } bind def /cbox { gsave 100 div setgray currentpoint /nowy exch def /nowx exch def /radius exch def /boxdown exch def /boxover exch def currentpoint newpath moveto radius 0 rmoveto nowx boxover add nowy nowx boxover add nowy boxdown sub radius arcto pop pop pop pop nowx boxover add nowy boxdown sub nowx nowy boxdown sub radius arcto pop pop pop pop nowx nowy boxdown sub nowx nowy radius arcto pop pop pop pop nowx nowy nowx boxover add nowy radius arcto pop pop pop pop currentgray 1.0 ne { gsave fill grestore } if 0 setgray stroke grestore } bind def /f.Y /RBKFont findfont def 0 Y save %%EndProlog 0 Y %%Page: 1 1 pagetop stdencoding /NTimes-Roman /Times-Roman RE /f.R /NTimes-Roman findfont def 0.00 0.0 10 10 f.R ft 911 X 521 Y 1363 X stdencoding /NTimes-Bold /Times-Bold RE /f.B /NTimes-Bold findfont def f.B 22 Z(Collaborative)s 2265 X(Networked)s 911 X 667 Y 1038 X(Communication:)s 2143 X(MUDs)s 2599 X(as)s 2777 X(Systems)s 911 X 813 Y 1988 X(Tools)s 600 X 981 Y 1524 X stdencoding /NTimes-Italic /Times-Italic RE /f.I /NTimes-Italic findfont def f.I 12 Z(R\311my)s 1729 X(Evard)s 1951 X(\261)s 2017 X f.R 12 Z(Northeastern)s 2458 X(University)s 840 X 1157 Y 1912 X f.B 12 Z(ABSTRACT)s 840 X 1291 Y 984 X f.R 10 Z(A)s 1072 X(systems)s 1324 X(administration)s 1751 X(group)s 1945 X(is)s 2030 X(only)s 2188 X(as)s 2284 X(effective)s 2559 X(as)s 2655 X(its)s 2759 X(internal)s 3004 X(communication)s 840 X 1364 Y(mechanisms)s 1171 X(.)s 1239 X(On)s 1320 X(-line)s 1472 X(communication)s 1917 X(has)s 2035 X(traditionally)s 2391 X(been)s 2545 X(managed)s 2814 X(via)s 2924 X(electronic)s 3217 X(mail)s 3365 X(or)s 840 X 1437 Y(news,)s 1026 X(which)s 1221 X(are)s 1335 X(neither)s 1553 X(real)s 1654 X(-time)s 1828 X(nor)s 1949 X(truly)s 2108 X(collaborative)s 2458 X(.)s 2530 X(Communication)s 2993 X(tools)s 3156 X(which)s 3352 X(let)s 840 X 1510 Y(multiple)s 1095 X(parties)s 1305 X(work)s 1472 X(together)s 1722 X(in)s 1805 X(real)s 1906 X(-time)s 2079 X(have)s 2236 X(become)s 2475 X(widespread)s 2810 X(on)s 2906 X(the)s 3018 X(Internet)s 3256 X(in)s 3338 X(the)s 840 X 1583 Y(last)s 956 X(several)s 1168 X(years)s 1309 X(.)s 840 X 1677 Y 984 X(In)s 1064 X(an)s 1152 X(effort)s 1325 X(to)s 1402 X(keep)s 1553 X(a)s 1609 X(physically)s 1910 X(disjoint)s 2137 X(systems)s 2375 X(staff)s 2520 X(working)s 2767 X(together)s 3012 X(effectively,)s 3342 X(we)s 840 X 1750 Y(have)s 1002 X(explored)s 1271 X(the)s 1389 X(use)s 1513 X(of)s 1603 X(MUDs)s 1819 X(as)s 1910 X(communications)s 2387 X(tools)s 2517 X(.)s 2591 X(By)s 2703 X(allowing)s 2972 X(many)s 3155 X(people)s 3368 X(to)s 840 X 1823 Y(interact)s 1066 X(in)s 1142 X(an)s 1230 X(extensible)s 1527 X(environment,)s 1906 X(MUDs)s 2112 X(have)s 2263 X(solved)s 2462 X(many)s 2635 X(of)s 2715 X(the)s 2822 X(problems)s 3095 X(that)s 3221 X(we)s 3324 X(had)s 840 X 1896 Y(with)s 981 X(on)s 1047 X(-line)s 1192 X(communication,)s 1647 X(and)s 1765 X(provided)s 2023 X(many)s 2193 X(unexpected)s 2519 X(bene\256ts)s 2749 X(as)s 2827 X(well)s 2943 X(.)s 600 X 2042 Y 1150 X f.B 10 Z(Introduction)s 600 X 2151 Y 744 X f.R 10 Z(Multi)s 933 X(User)s 1099 X(Dungeons,)s 1425 X(or)s 1520 X(MUDs,)s 1759 X(are)s 1882 X(widely)s 600 X 2224 Y(used)s 776 X(on)s 896 X(the)s 1031 X(Internet)s 1292 X(as)s 1401 X(interactive)s 1738 X(role)s 1842 X(-playing)s 600 X 2297 Y(games)s 771 X(.)s 834 X(They)s 995 X(use)s 1108 X(valuable)s 1359 X(network)s 1601 X(resources,)s 1895 X(attract)s 600 X 2370 Y(unruly)s 815 X(users,)s 1011 X(and)s 1149 X(are)s 1273 X(often)s 1452 X(run)s 1582 X(by)s 1690 X(students)s 1950 X(who)s 600 X 2443 Y(didn't)s 783 X(quite)s 941 X(bother)s 1135 X(to)s 1211 X(ask)s 1324 X(the)s 1430 X(permission)s 1747 X(of)s 1826 X(the)s 1933 X(local)s 600 X 2516 Y(authorities)s 883 X(.)s 949 X(As)s 1050 X(such,)s 1215 X(they)s 1356 X(are)s 1464 X(considered)s 1779 X(one)s 1901 X(of)s 1982 X(the)s 600 X 2589 Y(banes)s 779 X(of)s 861 X(systems)s 1100 X(administrators,)s 1527 X(and)s 1651 X(perhaps)s 1886 X(rightly)s 600 X 2662 Y(so)s 659 X(.)s 600 X 2756 Y 744 X(Recently)s 1008 X(MUDs)s 1215 X(have)s 1368 X(been)s 1521 X(seen)s 1667 X(in)s 1746 X(a)s 1803 X(new)s 1941 X(light)s 600 X 2829 Y(by)s 690 X(some)s 831 X(.)s 894 X(While)s 1082 X(they)s 1221 X(are)s 1327 X(used)s 1472 X(most)s 1625 X(often)s 1785 X(as)s 1864 X(gaming)s 600 X 2902 Y(environments,)s 1007 X(the)s 1116 X(software)s 1373 X(is)s 1445 X(in)s 1524 X(no)s 1617 X(way)s 1756 X(constrained)s 600 X 2975 Y(to)s 685 X(just)s 815 X(that)s 949 X(purpose)s 1159 X(.)s 1230 X(Instead,)s 1472 X(it)s 1542 X(is)s 1619 X(possible)s 1870 X(to)s 1954 X(pro-)s 600 X 3048 Y(gram)s 759 X(an)s 845 X(environment)s 1205 X(in)s 1280 X(the)s 1385 X(MUD)s 1563 X(that)s 1687 X(is)s 1755 X(suitable)s 1987 X(for)s 600 X 3121 Y(socializing)s 917 X(and)s 1039 X(communicating)s 1455 X(.)s 1520 X(The)s 1650 X(MUD)s 1830 X(becomes)s 600 X 3194 Y(a)s 658 X(virtual)s 861 X(``place'')s 1119 X(on)s 1214 X(the)s 1325 X(network)s 1572 X(where)s 1764 X(people)s 1971 X(can)s 600 X 3267 Y(meet)s 753 X(and)s 871 X(collaborate)s 1191 X(on)s 1279 X(various)s 1497 X(projects)s 1709 X(.)s 600 X 3361 Y 744 X(In)s 838 X(this)s 974 X(paper,)s 1178 X(we)s 1295 X(present)s 1528 X(our)s 1656 X(experiences)s 2012 X(in)s 600 X 3434 Y(using)s 771 X(a)s 827 X(MUD)s 1008 X(as)s 1090 X(a)s 1146 X(tool)s 1276 X(for)s 1379 X(improving)s 1682 X(the)s 1790 X(communi-)s 600 X 3507 Y(cations)s 812 X(of)s 889 X(our)s 999 X(systems)s 1233 X(administration)s 1642 X(group)s 1796 X(.)s 600 X 3634 Y 1093 X f.B 10 Z(Site)s 1223 X(Information)s 600 X 3743 Y 744 X f.R 10 Z(The)s 877 X(Experimental)s 1267 X(Systems)s 1519 X(Group)s 1718 X(manages)s 1982 X(the)s 600 X 3816 Y(computing)s 915 X(environment)s 1281 X(within)s 1481 X(the)s 1592 X(College)s 1829 X(of)s 1913 X(Com-)s 600 X 3889 Y(puter)s 773 X(Science)s 1018 X(at)s 1103 X(Northeastern)s 1484 X(University,)s 1819 X(which)s 2019 X(is)s 600 X 3962 Y(located)s 849 X(in)s 956 X(Boston,)s 1216 X(Massachusetts)s 1603 X(.)s 1697 X(The)s 1856 X(College)s 600 X 4035 Y(operates)s 868 X(approximately)s 1299 X(300)s 1443 X(computers)s 1767 X(of)s 1868 X(various)s 600 X 4108 Y(types,)s 802 X(including)s 1098 X(Macs,)s 1303 X(PCs,)s 1470 X(and)s 1609 X(a)s 1682 X(set)s 1800 X(of)s 1898 X(UNIX)s 600 X 4181 Y(workstations)s 984 X(consisting)s 1298 X(primarily)s 1590 X(of)s 1688 X(SPARCs)s 1968 X(and)s 600 X 4254 Y(DECstations)s 938 X(.)s 1008 X(About)s 1205 X(800)s 1334 X(users)s 1501 X(keep)s 1657 X(the)s 1769 X(computers,)s 600 X 4327 Y(the)s 704 X(network,)s 961 X(and)s 1079 X(the)s 1183 X(systems)s 1417 X(group)s 1593 X(very)s 1733 X(busy)s 1858 X(.)s 600 X 4421 Y 744 X(The)s 880 X(core)s 1027 X(group)s 1213 X(currently)s 1486 X(consists)s 1730 X(of)s 1817 X(\256ve)s 1949 X(full)s 2042 X(-)s 600 X 4494 Y(time)s 768 X(staff)s 935 X(members)s 1228 X(\(two)s 1398 X(of)s 1501 X(whom)s 1715 X(are)s 1845 X(students)s 600 X 4567 Y(enrolled)s 860 X(in)s 953 X(a)s 1024 X(cooperative)s 1377 X(education)s 1679 X(program\))s 1968 X(and)s 600 X 4640 Y(several)s 825 X(over)s 943 X(-active)s 1161 X(student)s 1388 X(volunteers)s 1666 X(.)s 1739 X(In)s 1828 X(addition,)s 600 X 4713 Y(eight)s 785 X(to)s 888 X(twelve)s 1119 X(students)s 1390 X(participate)s 1726 X(in)s 1830 X(systems)s 2042 X(-)s 2256 X 2042 Y(related)s 2466 X(projects)s 2705 X(each)s 2855 X(term)s 3004 X(of)s 3085 X(the)s 3193 X(school)s 3393 X(year)s 3534 X(as)s 3616 X(part)s 2256 X 2115 Y(of)s 2348 X(a)s 2415 X(volunteer)s 2704 X(program,)s 2983 X(and)s 3116 X(may)s 3268 X(put)s 3390 X(in)s 3479 X(as)s 3572 X(much)s 2256 X 2188 Y(time)s 2398 X(as)s 2476 X(the)s 2580 X(full)s 2673 X(-time)s 2837 X(staff)s 2978 X(\(or)s 3077 X(perhaps)s 3306 X(more\))s 3465 X(.)s 2256 X 2282 Y 2400 X(With)s 2556 X(this)s 2675 X(many)s 2845 X(people)s 3045 X(involved)s 3300 X(in)s 3375 X(systems)s 3610 X(pro-)s 2256 X 2355 Y(jects,)s 2464 X(coordination)s 2868 X(and)s 3030 X(communication)s 3512 X(become)s 2256 X 2428 Y(essential)s 2528 X(to)s 2620 X(making)s 2860 X(effective)s 3135 X(progress)s 3360 X(.)s 3439 X(The)s 3584 X(work)s 2256 X 2501 Y(places)s 2454 X(are)s 2565 X(scattered)s 2833 X(around)s 3046 X(the)s 3157 X(building,)s 3425 X(many)s 3602 X(peo-)s 2256 X 2574 Y(ple)s 2369 X(work)s 2537 X(from)s 2698 X(home,)s 2895 X(and)s 3023 X(the)s 3137 X(students)s 3388 X(and)s 3516 X(hackers)s 2256 X 2647 Y(on)s 2352 X(the)s 2464 X(group)s 2648 X(tend)s 2792 X(to)s 2873 X(keep)s 3028 X(unconventional)s 3468 X(hours,)s 3661 X(so)s 2256 X 2720 Y(meeting)s 2517 X(physically)s 2837 X(in)s 2934 X(order)s 3119 X(to)s 3216 X(coordinate)s 3544 X(is)s 3635 X(not)s 2256 X 2793 Y(always)s 2464 X(practical)s 2696 X(.)s 2256 X 2920 Y 2364 X f.B 10 Z(Communication)s 2846 X(Needs)s 3039 X(of)s 3116 X(a)s 3171 X(Systems)s 3423 X(Group)s 2256 X 3029 Y 2400 X f.R 10 Z(In)s 2478 X(any)s 2597 X(organization,)s 2971 X(communication)s 3410 X(between)s 3656 X(its)s 2256 X 3102 Y(members)s 2548 X(dictates)s 2801 X(how)s 2962 X(well)s 3125 X(the)s 3254 X(group)s 3455 X(functions)s 3703 X(.)s 2256 X 3175 Y(This)s 2405 X(is)s 2480 X(true)s 2614 X(of)s 2699 X(a)s 2759 X(community)s 3093 X(of)s 3178 X(any)s 3305 X(size)s 3410 X(.)s 3480 X(Consider)s 2256 X 3248 Y(the)s 2368 X(havoc)s 2557 X(created)s 2780 X(when)s 2953 X(a)s 3012 X(telephone)s 3301 X(network)s 3548 X(ceases)s 2256 X 3321 Y(functioning,)s 2608 X(the)s 2718 X(problems)s 2994 X(attributed)s 3279 X(to)s 3359 X(lack)s 3499 X(of)s 3583 X(com-)s 2256 X 3394 Y(munication)s 2589 X(in)s 2673 X(today's)s 2901 X(families,)s 3167 X(or)s 3254 X(\(sigh\))s 3441 X(what)s 3602 X(hap-)s 2256 X 3467 Y(pens)s 2400 X(when)s 2566 X(electronic)s 2853 X(mail)s 2995 X(quits)s 3147 X(\257owing)s 3350 X(.)s 2256 X 3561 Y 2400 X(Different)s 2674 X(communications)s 3145 X(tools)s 3304 X(are)s 3416 X(appropriate)s 2256 X 3634 Y(for)s 2362 X(different)s 2621 X(types)s 2791 X(of)s 2874 X(communication)s 3290 X(.)s 3357 X(The)s 3489 X(users)s 3654 X(on)s 2256 X 3707 Y(our)s 2366 X(network)s 2606 X(notify)s 2787 X(us)s 2868 X(of)s 2945 X(problems)s 3215 X(and)s 3333 X(make)s 3501 X(requests)s 2256 X 3780 Y(by)s 2349 X(sending)s 2583 X(electronic)s 2875 X(mail)s 3022 X(to)s 3100 X(``systems'')s 3400 X(.)s 3465 X(We)s 3584 X(work)s 2256 X 3853 Y(with)s 2413 X(them)s 2586 X(individually)s 2948 X(either)s 3140 X(through)s 3385 X(email)s 3574 X(or)s 3668 X(in)s 2256 X 3926 Y(person)s 2433 X(.)s 2497 X(We)s 2615 X(use)s 2729 X(newsgroups)s 3070 X(for)s 3171 X(announcing)s 3505 X(changes)s 2256 X 3999 Y(which)s 2472 X(will)s 2630 X(affect)s 2836 X(everyone,)s 3150 X(such)s 3325 X(as)s 3435 X(impending)s 2256 X 4072 Y(downtime)s 2563 X(or)s 2658 X(new)s 2808 X(software)s 3077 X(installations)s 3402 X(.)s 3480 X(We)s 3612 X(also)s 2256 X 4145 Y(have)s 2423 X(newsgroups)s 2781 X(for)s 2899 X(open)s 3069 X(discussion)s 3389 X(of)s 3486 X(systems)s 3698 X(-)s 2256 X 4218 Y(related)s 2461 X(issues)s 2621 X(.)s 2256 X 4312 Y 2400 X(Internally,)s 2702 X(much)s 2875 X(of)s 2955 X(the)s 3062 X(systems)s 3300 X(group's)s 3528 X(coordi-)s 2256 X 4385 Y(nation)s 2467 X(is)s 2556 X(done)s 2728 X(via)s 2853 X(electronic)s 3161 X(mail)s 3281 X(.)s 3363 X(\(We)s 3521 X(have)s 3690 X(a)s 2256 X 4458 Y(separate)s 2499 X(alias)s 2646 X(that)s 2770 X(we)s 2871 X(don't)s 3034 X(share)s 3199 X(with)s 3342 X(the)s 3448 X(user)s 3583 X(com-)s 2256 X 4531 Y(munity)s 2445 X(.)s 2516 X(This)s 2667 X(is)s 2743 X(enormously)s 3088 X(useful)s 3282 X(when)s 3457 X(combined)s 2256 X 4604 Y(with)s 2401 X(judicious)s 2672 X(use)s 2787 X(of)s 2868 X(mail)s 3014 X(\256lters)s 3167 X(.\))s 3254 X(Email)s 3441 X(within)s 3638 X(the)s 2256 X 4677 Y(group)s 2445 X(is)s 2525 X(nice)s 2672 X(for)s 2784 X(announcing)s 3128 X(future)s 3321 X(plans,)s 3513 X(sending)s 2256 X 4750 Y(notices)s 2472 X(about)s 2646 X(changes,)s 2905 X(or)s 2987 X(communicating)s 3430 X(nearly)s 3624 X(any)s 600 X 4967 Y f.B 10 Z(1993)s 754 X(LISA)s 931 X(\261)s 986 X(November)s 1305 X(1)s 1338 X(-5,)s 1432 X(1993)s 1586 X(\261)s 1641 X(Monterey,)s 1958 X(CA)s 3687 X(1)s 5280 Y pagebot %%Page: 2 2 pagetop stdencoding /NTimes-Bold /Times-Bold RE /f.B /NTimes-Bold findfont def f.B 10 Z 360 X 215 Y(Collaborative)s 771 X(Networked)s 1108 X(Communication:)s 1612 X(MUDs)s 1819 X(as)s 1900 X(Systems)s 2152 X(Tools)s 3303 X(Evard)s 360 X 448 Y stdencoding /NTimes-Roman /Times-Roman RE /f.R /NTimes-Roman findfont def f.R 10 Z(non)s 490 X(time)s 610 X(-critical)s 850 X(type)s 995 X(of)s 1080 X(information)s 1395 X(.)s 1464 X(It)s 1535 X(provides)s 1794 X(a)s 360 X 521 Y(handy)s 550 X(way)s 689 X(to)s 769 X(log)s 882 X(changes,)s 1143 X(is)s 1217 X(extremely)s 1514 X(convenient,)s 360 X 594 Y(and)s 489 X(is)s 567 X(largely)s 786 X(non)s 885 X(-interruptive,)s 1269 X(so)s 1361 X(you)s 1492 X(may)s 1639 X(choose)s 360 X 667 Y(when)s 542 X(to)s 632 X(read)s 785 X(your)s 944 X(new)s 1093 X(email)s 1243 X(.)s 1320 X(\(If)s 1425 X(you're)s 1637 X(on)s 1742 X(the)s 360 X 740 Y(group,)s 553 X(you)s 674 X(always)s 882 X(have)s 1030 X(new)s 1163 X(mail)s 1283 X(.\))s 360 X 834 Y 504 X(Despite)s 738 X(its)s 831 X(\257exibility,)s 1138 X(we)s 1245 X(discovered)s 1563 X(that)s 1693 X(elec-)s 360 X 907 Y(tronic)s 547 X(mail)s 698 X(was)s 832 X(not)s 947 X(appropriate)s 1281 X(for)s 1388 X(all)s 1486 X(of)s 1571 X(the)s 1683 X(types)s 360 X 980 Y(of)s 444 X(communication)s 889 X(that)s 1020 X(we)s 1128 X(needed)s 1317 X(.)s 1386 X(Time)s 1528 X(-dependent)s 360 X 1053 Y(information)s 714 X(is)s 798 X(one)s 933 X(example:)s 1217 X(sending)s 1462 X(email)s 1650 X(saying)s 360 X 1126 Y(``Is)s 485 X(anyone)s 710 X(in)s 795 X(the)s 910 X(machine)s 1171 X(room)s 1345 X(right)s 1505 X(now?'')s 1727 X(just)s 360 X 1199 Y(doesn't)s 598 X(work)s 776 X(if)s 859 X(the)s 982 X(person)s 1200 X(in)s 1293 X(the)s 1416 X(machine)s 1684 X(room)s 360 X 1272 Y(doesn't)s 581 X(read)s 721 X(their)s 869 X(mail)s 1014 X(while)s 1189 X(there)s 1323 X(.)s 1388 X(Further,)s 1627 X(it's)s 1739 X(not)s 360 X 1345 Y(very)s 522 X(effective)s 801 X(for)s 922 X(round)s 1076 X(-table)s 1273 X(discussions)s 1577 X(.)s 1660 X(While)s 360 X 1418 Y(email)s 532 X(can)s 647 X(be)s 732 X(used)s 877 X(this)s 997 X(way,)s 1148 X(we)s 1249 X(have)s 1398 X(noticed)s 1618 X(that)s 1742 X(the)s 360 X 1491 Y(quoting)s 610 X(mechanism)s 962 X(commonly)s 1293 X(used)s 1461 X(in)s 1559 X(electronic)s 360 X 1564 Y(mail)s 502 X(can)s 617 X(turn)s 746 X(a)s 798 X(potential)s 1055 X(brainstorming)s 1451 X(session)s 1667 X(into)s 1794 X(a)s 360 X 1637 Y(nitpicking)s 670 X(mechanism)s 975 X(.)s 1053 X(Worse,)s 1282 X(it's)s 1406 X(not)s 1529 X(quite)s 1701 X(real)s 1802 X(-)s 360 X 1710 Y(time,)s 541 X(so)s 644 X(the)s 770 X(discussion)s 1092 X(will)s 1241 X(tend)s 1400 X(to)s 1496 X(die)s 1622 X(out,)s 1769 X(or)s 360 X 1783 Y(become)s 590 X(multi)s 732 X(-threaded)s 984 X(.)s 360 X 1877 Y 504 X(Because)s 754 X(of)s 836 X(the)s 945 X(distributed)s 1259 X(nature)s 1454 X(of)s 1537 X(our)s 1653 X(group,)s 360 X 1950 Y(we)s 461 X(needed)s 673 X(to)s 748 X(be)s 834 X(able)s 969 X(to)s 1043 X(have)s 1191 X(on)s 1257 X(-line)s 1402 X(discussions)s 1728 X(and)s 360 X 2023 Y(to)s 472 X(communicate)s 893 X(about)s 1101 X(real)s 1202 X(-time)s 1404 X(issues)s 1564 X(.)s 1663 X(Email)s 360 X 2096 Y(wasn't)s 575 X(working)s 832 X(out)s 953 X(well,)s 1122 X(and)s 1254 X(news)s 1427 X(clearly)s 1646 X(wasn't)s 360 X 2169 Y(the)s 479 X(right)s 642 X(direction)s 917 X(in)s 1006 X(which)s 1206 X(to)s 1296 X(move)s 1444 X(.)s 1521 X(Many)s 1714 X(pro-)s 360 X 2242 Y(grams)s 559 X(available)s 838 X(on)s 940 X(the)s 1058 X(Internet)s 1302 X(provide)s 1540 X(interactive)s 360 X 2315 Y(networked)s 669 X(communication,)s 1131 X(and)s 1256 X(presented)s 1541 X(interesting)s 360 X 2388 Y(possibilities)s 681 X(.)s 748 X(After)s 916 X(some)s 1084 X(exploration,)s 1432 X(we)s 1537 X(decided)s 1772 X(to)s 360 X 2461 Y(test)s 476 X(a)s 528 X(MUD)s 705 X(for)s 804 X(a)s 856 X(few)s 978 X(weeks)s 1145 X(.)s 360 X 2588 Y 999 X f.B 10 Z(MUDs)s 360 X 2697 Y 504 X f.R 10 Z(MUD)s 710 X(stands)s 928 X(for)s 1056 X(Multi)s 1257 X(User)s 1435 X(Dungeon)s 1730 X(\(or,)s 360 X 2770 Y(pretentiously,)s 758 X(Multi)s 939 X(User)s 1096 X(Dimension\))s 1411 X(.)s 1481 X(The)s 1616 X(original)s 360 X 2843 Y(MUD)s 551 X(was)s 691 X(written)s 917 X(in)s 1006 X(1979)s 1175 X(by)s 1278 X(Roy)s 1425 X(Trubshaw)s 1728 X(and)s 360 X 2916 Y(Richard)s 596 X(Bartle)s 785 X(on)s 876 X(a)s 931 X(DECsystem)s 1250 X(-10)s 1363 X(at)s 1437 X(Essex)s 1617 X(Univer-)s 360 X 2989 Y(sity)s 488 X([Bart90])s 713 X(.)s 783 X(It)s 855 X(was)s 990 X(a)s 1051 X(game)s 1227 X(similar)s 1446 X(to)s 1530 X(the)s 1644 X(classic)s 360 X 3062 Y(Colossal)s 614 X(Cave)s 775 X(adventure,)s 1079 X(except)s 1278 X(that)s 1402 X(it)s 1463 X(allowed)s 1698 X(mul-)s 360 X 3135 Y(tiple)s 514 X(people)s 726 X(to)s 812 X(play)s 962 X(at)s 1046 X(the)s 1163 X(same)s 1336 X(time)s 1491 X(and)s 1622 X(interact)s 360 X 3208 Y(with)s 516 X(each)s 676 X(other)s 813 X(.)s 888 X(Reportedly,)s 1237 X(this)s 1370 X(was)s 1510 X(enormously)s 360 X 3281 Y(popular,)s 602 X(and)s 720 X(the)s 824 X(idea)s 958 X(caught)s 1158 X(on)s 1224 X(.)s 360 X 3375 Y 504 X(The)s 644 X(original)s 888 X(idea)s 1036 X(has)s 1161 X(evolved)s 1409 X(over)s 1564 X(the)s 1683 X(years)s 360 X 3448 Y(into)s 501 X(a)s 568 X(client/server)s 937 X(architecture)s 1254 X(.)s 1330 X(The)s 1470 X(MUD)s 1661 X(server)s 360 X 3521 Y(manipulates)s 723 X(the)s 844 X(database)s 1114 X(of)s 1208 X(objects)s 1437 X(in)s 1528 X(the)s 1649 X(virtual)s 360 X 3594 Y(world,)s 571 X(is)s 655 X(programmable)s 1083 X(in)s 1173 X(some)s 1352 X(sort)s 1490 X(of)s 1583 X(language)s 360 X 3667 Y(that)s 499 X(allows)s 712 X(one)s 846 X(to)s 936 X(extend)s 1153 X(the)s 1274 X(set)s 1388 X(of)s 1482 X(objects,)s 1728 X(and)s 360 X 3740 Y(accepts)s 615 X(network)s 889 X(connections)s 1264 X(from)s 1449 X(clients)s 1625 X(.)s 1720 X(The)s 360 X 3813 Y(client's)s 601 X(primary)s 855 X(task)s 1006 X(is)s 1095 X(to)s 1191 X(send)s 1357 X(and)s 1497 X(receive)s 1735 X(I/O)s 360 X 3886 Y(between)s 614 X(the)s 727 X(server)s 921 X(and)s 1048 X(the)s 1161 X(user)s 1272 X(.)s 1342 X(The)s 1476 X(MUD)s 1661 X(server)s 360 X 3959 Y(exists)s 551 X(on)s 655 X(one)s 789 X(machine)s 1054 X(on)s 1159 X(the)s 1280 X(network,)s 1554 X(while)s 1742 X(the)s 360 X 4032 Y(client)s 550 X(is)s 635 X(typically)s 910 X(run)s 1038 X(by)s 1144 X(the)s 1266 X(users)s 1443 X(on)s 1548 X(their)s 1710 X(own)s 360 X 4105 Y(machines)s 613 X(.)s 360 X 4199 Y 504 X(Today,)s 716 X(there)s 875 X(are)s 982 X(perhaps)s 1214 X(a)s 1269 X(dozen)s 1454 X(popular)s 1683 X(types)s 360 X 4272 Y(of)s 451 X(MUDs)s 668 X(available)s 947 X(on)s 1048 X(the)s 1165 X(Internet)s 1373 X(.)s 1447 X(They)s 1619 X(vary)s 1772 X(in)s 360 X 4345 Y(many)s 539 X(details,)s 763 X(such)s 916 X(as)s 1003 X(their)s 1157 X(embedded)s 1462 X(programming)s 360 X 4418 Y(language)s 635 X(and)s 765 X(their)s 922 X(storage)s 1149 X(methods)s 1409 X(for)s 1519 X(the)s 1634 X(objects)s 360 X 4491 Y(they)s 506 X(manipulate,)s 852 X(but)s 968 X(all)s 1067 X(have)s 1224 X(the)s 1337 X(capacity)s 1592 X(to)s 1675 X(allow)s 360 X 4564 Y(multiple)s 619 X(users)s 791 X(to)s 878 X(interact)s 1115 X(within)s 1321 X(some)s 1497 X(shared)s 1706 X(con-)s 360 X 4637 Y(text)s 461 X(.)s 2016 X 448 Y 2396 X f.B 10 Z(Interacting)s 2737 X(with)s 2885 X(a)s 2940 X(MUD)s 2016 X 557 Y 2160 X f.R 10 Z(The)s 2291 X(majority)s 2546 X(of)s 2629 X(existing)s 2869 X(MUDs)s 3078 X(are)s 3188 X(text)s 3289 X(-based)s 3463 X(.)s 2016 X 630 Y(One)s 2173 X(types)s 2360 X(commands)s 2694 X(to)s 2791 X(them)s 2970 X(using)s 3159 X(a)s 3234 X(primitive)s 2016 X 703 Y(English)s 2220 X(-like)s 2366 X(set)s 2464 X(of)s 2542 X(commands,)s 2871 X(and)s 2990 X(sees)s 3125 X(the)s 3230 X(results)s 3428 X(in)s 2016 X 776 Y(a)s 2070 X(like)s 2195 X(manner)s 2395 X(.)s 2458 X(They)s 2619 X(are)s 2724 X(very)s 2865 X(reminiscent)s 3201 X(of)s 3279 X(the)s 3384 X(ori-)s 2016 X 849 Y(ginal)s 2172 X(Colossal)s 2424 X(Cave)s 2583 X(adventure)s 2846 X(.)s 2016 X 943 Y 2160 X(For)s 2274 X(example,)s 2540 X(I)s 2584 X(could)s 2754 X(type:)s stdencoding /NCourier /Courier RE /f.CW /NCourier findfont def 2016 X 1045 Y 2064 X f.CW 10 Z(look)s 2016 X 1147 Y f.R 10 Z(and)s 2134 X(the)s 2238 X(response)s 2493 X(might)s 2671 X(be:)s 2016 X 1249 Y 2064 X f.CW 10 Z(You)s 2224 X(are)s 2384 X(standing)s 2744 X(in)s 2864 X(a)s 2944 X(sunny,)s 3224 X(grassy)s 2016 X 1322 Y 2064 X(park)s 2224 X(-like)s 2464 X(area,)s 2704 X(under)s 2944 X(the)s 3104 X(sprawling)s 2016 X 1395 Y 2064 X(limbs)s 2304 X(of)s 2424 X(a)s 2504 X(weeping)s 2824 X(willow)s 3104 X(tree,)s 2016 X 1468 Y 2064 X(growing)s 2384 X(on)s 2504 X(the)s 2664 X(banks)s 2904 X(of)s 3024 X(a)s 3104 X(small)s 2016 X 1541 Y 2064 X(stream)s 2304 X(.)s 2424 X(To)s 2544 X(the)s 2704 X(south)s 2944 X(you)s 3104 X(see)s 3264 X(a)s 2016 X 1614 Y 2064 X(university)s 2504 X(campus)s 2744 X(.)s 2864 X(A)s 2944 X(trail)s 3184 X(winds)s 2016 X 1687 Y 2064 X(north)s 2304 X(into)s 2504 X(a)s 2584 X(forest)s 2824 X(.)s 2944 X(Erik)s 3144 X(is)s 3264 X(here)s 3424 X(.)s 2016 X 1810 Y 2160 X f.R 10 Z(Technically,)s 2523 X(what)s 2682 X(happened)s 2966 X(is)s 3040 X(that)s 3170 X(I)s 3221 X(typed)s 3398 X(the)s 2016 X 1883 Y(string)s 2207 X(``look'')s 2451 X(to)s 2541 X(my)s 2664 X(client)s 2852 X(program)s 3077 X(.)s 3154 X(It)s 3233 X(sent)s 3379 X(that)s 2016 X 1956 Y(command)s 2310 X(to)s 2393 X(the)s 2506 X(MUD)s 2692 X(server,)s 2903 X(which)s 3097 X(parsed)s 3303 X(it)s 3373 X(\(not)s 2016 X 2029 Y(very)s 2167 X(dif\256cult)s 2412 X(in)s 2497 X(this)s 2627 X(case\))s 2765 X(.)s 2837 X(The)s 2974 X(server)s 3169 X(then)s 3316 X(calcu-)s 2016 X 2102 Y(lated)s 2178 X(the)s 2291 X(effects)s 2501 X(of)s 2587 X(my)s 2703 X(command)s 2997 X(on)s 3094 X(the)s 3207 X(objects)s 3428 X(in)s 2016 X 2175 Y(the)s 2128 X(server)s 2321 X(\(which)s 2536 X(was)s 2670 X(to)s 2752 X(retrieve)s 2987 X(the)s 3099 X(description)s 3425 X(of)s 2016 X 2248 Y(my)s 2129 X(location\),)s 2412 X(and)s 2537 X(sent)s 2674 X(the)s 2785 X(result)s 2963 X(back)s 3118 X(to)s 3199 X(my)s 3313 X(client,)s 2016 X 2321 Y(which)s 2201 X(printed)s 2412 X(it)s 2472 X(on)s 2560 X(my)s 2667 X(screen)s 2838 X(.)s 2016 X 2415 Y 2160 X(In)s 2239 X(order)s 2403 X(to)s 2479 X(establish)s 2738 X(a)s 2792 X(connection)s 3109 X(with)s 3253 X(a)s 3308 X(MUD,)s 2016 X 2488 Y(you)s 2151 X(must)s 2316 X(have)s 2477 X(a)s 2542 X(``character'')s 2911 X(on)s 3012 X(the)s 3129 X(server)s 3292 X(.)s 3366 X(You)s 2016 X 2561 Y(must)s 2170 X(supply)s 2371 X(a)s 2425 X(password)s 2700 X(to)s 2776 X(login)s 2937 X(to)s 3013 X(the)s 3119 X(MUD)s 3298 X(as)s 3379 X(that)s 2016 X 2634 Y(character,)s 2320 X(much)s 2509 X(like)s 2651 X(when)s 2836 X(you)s 2975 X(login)s 3152 X(to)s 3244 X(a)s 3314 X(UNIX)s 2016 X 2707 Y(workstation)s 2331 X(.)s 2398 X(Once)s 2567 X(the)s 2677 X(connection)s 2998 X(has)s 3116 X(been)s 3271 X(opened,)s 2016 X 2780 Y(all)s 2124 X(the)s 2246 X(commands)s 2575 X(that)s 2716 X(you)s 2854 X(type)s 3008 X(are)s 3129 X(perceived)s 3428 X(to)s 2016 X 2853 Y(come)s 2184 X(from)s 2336 X(your)s 2480 X(character)s 2726 X(.)s 2788 X(When)s 2971 X(you)s 3094 X(close)s 3256 X(the)s 3362 X(con-)s 2016 X 2926 Y(nection,)s 2255 X(the)s 2362 X(state)s 2511 X(of)s 2590 X(your)s 2735 X(character)s 3005 X(\(location,)s 3284 X(posses-)s 2016 X 2999 Y(sions,)s 2211 X(etc\))s 2353 X(may)s 2509 X(or)s 2605 X(may)s 2761 X(not)s 2887 X(be)s 2991 X(preserved)s 3291 X(by)s 3398 X(the)s 2016 X 3072 Y(server)s 2179 X(.)s 2016 X 3166 Y 2160 X(The)s 2303 X(MUD)s 2498 X(server)s 2701 X(typically)s 2976 X(presents)s 3235 X(a)s 3305 X(virtual)s 2016 X 3239 Y(space)s 2211 X(organized)s 2519 X(into)s 2668 X(``rooms'')s 2922 X(.)s 3006 X(A)s 3099 X(room,)s 3301 X(in)s 3398 X(the)s 2016 X 3312 Y(MUD)s 2194 X(sense,)s 2380 X(corresponds)s 2725 X(to)s 2801 X(a)s 2855 X(place)s 3021 X(where)s 3208 X(characters)s 2016 X 3385 Y(or)s 2099 X(objects)s 2317 X(may)s 2460 X(be)s 2550 X(located)s 2744 X(.)s 2810 X(In)s 2892 X(the)s 3001 X(example)s 3255 X(above,)s 3458 X(I)s 2016 X 3458 Y(was)s 2153 X(in)s 2238 X(a)s 2302 X(room)s 2476 X(described)s 2766 X(as)s 2856 X(a)s 2920 X(park)s 3038 X(-like)s 3195 X(area)s 3307 X(.)s 3380 X(If)s 3458 X(I)s 2016 X 3531 Y(typed)s 2193 X(``north'',)s 2467 X(I)s 2518 X(would)s 2713 X(have)s 2868 X(been)s 3022 X(moved)s 3231 X(to)s 3311 X(a)s 3369 X(new)s 2016 X 3604 Y(room,)s 2202 X(presumably)s 2542 X(some)s 2713 X(ways)s 2880 X(down)s 3057 X(the)s 3169 X(windy)s 3365 X(path)s 2016 X 3677 Y(and)s 2134 X(into)s 2260 X(the)s 2364 X(forest)s 2516 X(.)s 2016 X 3771 Y 2160 X(The)s 2291 X(primary)s 2529 X(means)s 2727 X(of)s 2809 X(communication)s 3252 X(within)s 3450 X(a)s 2016 X 3844 Y(MUD)s 2200 X(is)s 2274 X(by)s 2369 X(talking)s 2583 X(to)s 2663 X(other)s 2828 X(people)s 3034 X(who)s 3176 X(are)s 3286 X(located)s 2016 X 3917 Y(in)s 2091 X(the)s 2197 X(same)s 2359 X(room)s 2523 X(as)s 2603 X(you)s 2726 X(are)s 2808 X(.)s 2871 X(An)s 2976 X(example)s 3227 X(transcript)s 2016 X 3990 Y(might)s 2194 X(look)s 2334 X(like:)s 2016 X 4092 Y 2064 X f.CW 10 Z(Woj)s 2224 X([to)s 2384 X(Remy]:)s 2664 X(I)s 2744 X(looked)s 3024 X(in)s 3144 X(Tom's)s 2016 X 4165 Y 2224 X(office,)s 2544 X(and)s 2704 X(found)s 2944 X(that)s 3144 X(we)s 3264 X(don't)s 2016 X 4238 Y 2224 X(have)s 2424 X(the)s 2584 X(right)s 2824 X(kind)s 3024 X(of)s 3144 X(scsi)s 2016 X 4311 Y 2224 X(cable)s 2424 X(.)s stdencoding /NCourier-BoldOblique /Courier-BoldOblique RE /f.CX /NCourier-BoldOblique findfont def 2016 X 4384 Y 2064 X(>)s 2144 X f.CX 10 Z(say)s 2304 X(Hmm)s 2424 X(.)s 2016 X 4457 Y 2064 X f.CW 10 Z(You)s 2224 X(say,)s 2424 X("Hmm)s 2584 X(.")s 2016 X 4530 Y 2064 X(Ivan)s 2264 X(says,)s 2504 X("We've)s 2784 X(got)s 2944 X(to)s 3064 X(have)s 3264 X(one)s 2016 X 4603 Y 2224 X(somewhere)s 2584 X(.")s 360 X 4967 Y f.B 10 Z(2)s 2026 X(1993)s 2180 X(LISA)s 2357 X(\261)s 2412 X(November)s 2731 X(1)s 2764 X(-5,)s 2858 X(1993)s 3012 X(\261)s 3067 X(Monterey,)s 3384 X(CA)s 5280 Y pagebot %%Page: 3 3 pagetop stdencoding /NTimes-Bold /Times-Bold RE /f.B /NTimes-Bold findfont def f.B 10 Z 600 X 215 Y(Evard)s 1773 X(Collaborative)s 2184 X(Networked)s 2521 X(Communication:)s 3025 X(MUDs)s 3232 X(as)s 3313 X(Systems)s 3565 X(Tools)s 600 X 448 Y 648 X stdencoding /NCourier /Courier RE /f.CW /NCourier findfont def f.CW 10 Z(Woj)s 808 X(says,)s 1048 X("Well,)s 1328 X(we)s 1448 X(do)s 1568 X(have)s 1768 X(one,)s 600 X 521 Y 808 X(but)s 968 X(it's)s 1168 X(only)s 1368 X(a)s 1448 X(half)s 1608 X(-foot)s 600 X 594 Y 808 X(long)s 968 X(.")s 600 X 667 Y 648 X(>)s 728 X stdencoding /NCourier-BoldOblique /Courier-BoldOblique RE /f.CX /NCourier-BoldOblique findfont def f.CX 10 Z(emote)s 968 X(tries)s 1208 X(to)s 1328 X(think)s 1568 X(of)s 1688 X(the)s 600 X 740 Y 808 X(type)s 1008 X(of)s 1128 X(cable)s 1368 X(you)s 1528 X(need)s 1688 X(.)s 600 X 813 Y 648 X f.CW 10 Z(Remy)s 848 X(tries)s 1088 X(to)s 1208 X(think)s 1448 X(of)s 1568 X(the)s 1728 X(type)s 1928 X(of)s 600 X 886 Y 808 X(cable)s 1048 X(you)s 1208 X(need)s 1368 X(.)s 600 X 959 Y 648 X(Woj)s 808 X(says,)s 1048 X("Or,)s 1248 X(I)s 1328 X(could)s 1568 X(turn)s 1768 X(off)s 600 X 1032 Y 808 X(alewife)s 1128 X(and)s 1288 X(steal)s 1528 X(that)s 1728 X(one)s 1848 X(.)s 1888 X(.)s 1928 X(.")s 600 X 1105 Y 648 X(>)s 728 X f.CX 10 Z(say)s 888 X("Check)s 1168 X(my)s 1288 X(office,)s 1608 X(if)s 1728 X(there's)s 600 X 1178 Y 808 X(not)s 968 X(one)s 1128 X(there,)s 1408 X(bounce)s 1688 X(alewife)s 1968 X(.")s 600 X 1251 Y 648 X f.CW 10 Z(You)s 808 X(say,)s 1008 X("Check)s 1288 X(my)s 1408 X(office,)s 1728 X(if)s 600 X 1324 Y 808 X(there's)s 1128 X(not)s 1288 X(one)s 1448 X(there,)s 1728 X(bounce)s 600 X 1397 Y 808 X(alewife)s 1088 X(.")s 600 X 1470 Y 648 X(Rob)s 808 X(says,)s 1048 X("Anyone)s 1368 X(up)s 1488 X(for)s 1648 X(some)s 1848 X(ice)s 600 X 1543 Y 808 X(cream?")s 600 X 1616 Y 648 X(Brian)s 888 X(<)s 928 X(-)s 600 X 1689 Y 648 X(Woj)s 808 X(says,)s 1048 X("Wait,)s 1328 X(I'm)s 1488 X(on)s 1608 X(my)s 1728 X(way!")s 600 X 1762 Y 648 X(>)s 728 X f.CX 10 Z(emote)s 968 X(sighs)s 1208 X(and)s 1368 X(chuckles)s 1688 X(.)s 600 X 1835 Y 648 X f.CW 10 Z(Remy)s 848 X(sighs)s 1088 X(and)s 1248 X(chuckles)s 1568 X(.)s stdencoding /NCourier-Oblique /Courier-Oblique RE /f.CI /NCourier-Oblique findfont def 600 X 1958 Y 744 X stdencoding /NTimes-Roman /Times-Roman RE /f.R /NTimes-Roman findfont def f.R 10 Z(A)s 820 X(character)s 1094 X(may)s 1237 X(say)s 1354 X(something)s 1660 X(using)s 1833 X(the)s 1944 X f.CW 10 Z(say)s 600 X 2031 Y f.CI 10 Z(something)s 1000 X f.R 10 Z(command)s 1263 X(.)s 1341 X(They)s 1517 X(may)s 1671 X(indicate)s 1923 X(some)s 600 X 2104 Y(sort)s 739 X(of)s 833 X(action)s 1036 X(by)s 1141 X(using)s 1324 X(the)s 1446 X f.CW 10 Z(emote)s 1704 X f.CI 10 Z(something)s 600 X 2177 Y f.R 10 Z(command)s 863 X(.)s 932 X(I)s 984 X(typed)s 1162 X f.CW 10 Z(emote)s 1410 X(sighs)s 1657 X(and)s 1824 X(chuck-)s 600 X 2250 Y(les)s 720 X(.)s 808 X f.R 10 Z(in)s 886 X(the)s 994 X(example)s 1247 X(above)s 1406 X(.)s 1471 X(All)s 1584 X(of)s 1666 X(these)s 1831 X(common)s 600 X 2323 Y(commands)s 928 X(have)s 1093 X(short)s 1264 X(cuts)s 1410 X(to)s 1500 X(make)s 1683 X(them)s 1855 X(easy)s 2012 X(to)s 600 X 2396 Y(type)s 753 X(\()s f.CW 10 Z(say)s 933 X f.R 10 Z(can)s 1064 X(be)s 1165 X(shortened)s 1462 X(to)s 1552 X(a)s 1620 X(quotation)s 1910 X(mark,)s 600 X 2469 Y(while)s 779 X f.CW 10 Z(emote)s 1009 X f.R 10 Z(can)s 1132 X(be)s 1225 X(shorted)s 1451 X(to)s 1533 X(a)s 1593 X(colon\))s 1793 X(and)s 1919 X(come)s 600 X 2542 Y(naturally)s 860 X(after)s 1005 X(a)s 1057 X(few)s 1179 X(minutes)s 1413 X(of)s 1490 X(trying)s 1671 X(them)s 1805 X(.)s 600 X 2636 Y 744 X(It)s 822 X(is)s 904 X(possible)s 1160 X(to)s 1249 X(talk)s 1387 X(privately)s 1662 X(with)s 1819 X(a)s 1887 X(person)s 600 X 2709 Y(using)s 774 X(some)s 945 X(form)s 1104 X(of)s 1189 X(a)s 1249 X(whisper)s 1489 X(command,)s 1798 X(or)s 1882 X(to)s 1963 X(talk)s 600 X 2782 Y(to)s 677 X(someone)s 939 X(who)s 1078 X(is)s 1148 X(not)s 1258 X(in)s 1335 X(the)s 1442 X(same)s 1606 X(room)s 1772 X(by)s 1864 X(using)s 2034 X(a)s 600 X 2855 Y(paging)s 808 X(command)s 1071 X(.)s 1137 X(Many)s 1319 X(other)s 1483 X(commands)s 1798 X(exist,)s 1968 X(and)s 600 X 2928 Y(may)s 737 X(be)s 822 X(created)s 1038 X(as)s 1116 X(needed)s 1305 X(.)s 600 X 3022 Y 744 X(One)s 892 X(interesting)s 1212 X(aspect)s 1417 X(of)s 1509 X(MUDs)s 1727 X(is)s 1810 X(that)s 1949 X(they)s 600 X 3095 Y(impose)s 822 X(a)s 881 X(spatial)s 1086 X(metaphor)s 1367 X(on)s 1462 X(the)s 1573 X(participants)s 1886 X(.)s 1953 X(One)s 600 X 3168 Y(may)s 739 X(talk)s 865 X(and)s 986 X(interact)s 1213 X(easily)s 1395 X(with)s 1539 X(people)s 1742 X(in)s 1819 X(the)s 1926 X(same)s 600 X 3241 Y(virtual)s 800 X(room,)s 982 X(and)s 1103 X(may)s 1243 X(use)s 1357 X(other)s 1519 X(means)s 1714 X(to)s 1790 X(communi-)s 600 X 3314 Y(cate)s 734 X(with)s 878 X(people)s 1081 X(in)s 1158 X(other)s 1320 X(locations)s 1562 X(.)s 1626 X(In)s 1706 X(this)s 1828 X(way,)s 1982 X(the)s 600 X 3387 Y(MUD)s 780 X(becomes)s 1039 X(a)s 1094 X(virtual)s 1294 X(space)s 1467 X(reachable)s 1748 X(via)s 1854 X(the)s 1960 X(net-)s 600 X 3460 Y(work)s 736 X(.)s 600 X 3587 Y f.B 10 Z(Applicability)s 1011 X(of)s 1105 X(MUDs)s 1329 X(to)s 1423 X(Systems)s 1693 X(Communica-)s 600 X 3660 Y 744 X(tion)s 600 X 3769 Y 744 X f.R 10 Z(We)s 873 X(felt)s 999 X(that)s 1136 X(MUDs)s 1354 X(had)s 1487 X(several)s 1714 X(features)s 1963 X(that)s 600 X 3842 Y(would)s 795 X(make)s 969 X(them)s 1132 X(a)s 1191 X(useful)s 1383 X(communications)s 1854 X(tool)s 1987 X(for)s 600 X 3915 Y(the)s 704 X(systems)s 938 X(group:)s 600 X 3988 Y 663 X f.Y 10 Z(\017)s 734 X f.R 10 Z(MUDs)s 939 X(are)s 1045 X(interactive)s 1353 X(in)s 1429 X(real)s 1530 X(-time)s 1672 X(.)s 1736 X(When)s 1920 X(one)s 600 X 4061 Y 734 X(says)s 876 X(something)s 1181 X(on)s 1274 X(the)s 1383 X(MUD,)s 1582 X(all)s 1677 X(the)s 1786 X(intended)s 600 X 4134 Y 734 X(recipients)s 1053 X(see)s 1197 X(it)s 1293 X(immediately)s 1629 X(.)s 1727 X(They)s 1923 X(can)s 600 X 4207 Y 734 X(answer)s 950 X(in)s 1029 X(the)s 1138 X(amount)s 1365 X(of)s 1447 X(time)s 1594 X(it)s 1659 X(takes)s 1823 X(to)s 1901 X(type)s 600 X 4280 Y 734 X(their)s 879 X(response)s 1112 X(.)s 600 X 4353 Y 663 X f.Y 10 Z(\017)s 734 X f.R 10 Z(MUDs)s 947 X(are)s 1061 X(a)s 1123 X(networked)s 1436 X(service)s 1626 X(.)s 1697 X(Clients)s 1920 X(and)s 600 X 4426 Y 734 X(servers)s 958 X(simply)s 1175 X(need)s 1336 X(to)s 1423 X(be)s 1521 X(on)s 1622 X(the)s 1739 X(same)s 1912 X(net-)s 600 X 4499 Y 734 X(work)s 896 X(in)s 974 X(order)s 1140 X(to)s 1218 X(connect)s 1452 X(to)s 1530 X(each)s 1680 X(other)s 1817 X(.)s 1883 X(Thus)s 600 X 4572 Y 734 X(one)s 864 X(need)s 1024 X(not)s 1143 X(be)s 1240 X(logged)s 1455 X(into)s 1593 X(the)s 1708 X(same)s 1879 X(com-)s 600 X 4645 Y 734 X(puter)s 904 X(as)s 993 X(the)s 1108 X(people)s 1319 X(with)s 1471 X(whom)s 1670 X(one)s 1800 X(is)s 1879 X(com-)s 600 X 4718 Y 734 X(municating)s 1035 X(.)s 2256 X 448 Y 2319 X f.Y 10 Z(\017)s 2390 X f.R 10 Z(MUDs)s 2593 X(are)s 2698 X(multiuser)s 2974 X(capable)s 3179 X(.)s 3241 X(A)s 3312 X(large)s 3469 X(number)s 2256 X 521 Y 2390 X(of)s 2467 X(people)s 2667 X(can)s 2782 X(interact)s 3006 X(with)s 3147 X(each)s 3292 X(other)s 3451 X(at)s 3522 X(once)s 3648 X(.)s 2256 X 594 Y 2319 X f.Y 10 Z(\017)s 2390 X f.R 10 Z(MUDs)s 2623 X(are)s 2758 X(extensible)s 3030 X(.)s 3122 X(Any)s 3289 X(decent)s 3517 X(MUD)s 2256 X 667 Y 2390 X(server)s 2591 X(will)s 2734 X(have)s 2898 X(an)s 2999 X(embedded)s 3310 X(programming)s 2256 X 740 Y 2390 X(language)s 2655 X(that)s 2780 X(may)s 2919 X(be)s 3006 X(used)s 3152 X(to)s 3228 X(extend)s 3431 X(the)s 3538 X(data-)s 2256 X 813 Y 2390 X(base)s 2534 X(of)s 2614 X(server)s 2802 X(objects)s 3017 X(and)s 3138 X(to)s 3215 X(create)s 3400 X(new)s 3535 X(com-)s 2256 X 886 Y 2390 X(mands)s 2564 X(.)s 2637 X(If)s 2715 X(the)s 2831 X(tool)s 2969 X(is)s 3048 X(to)s 3134 X(be)s 3231 X(adapted)s 3474 X(to)s 3561 X(new)s 2256 X 959 Y 2390 X(uses,)s 2544 X(it)s 2604 X(must)s 2756 X(be)s 2841 X(\257exible)s 3042 X(.)s 2256 X 1032 Y 2319 X f.Y 10 Z(\017)s 2390 X f.R 10 Z(MUDs)s 2600 X(are)s 2711 X(exclusive)s 2964 X(.)s 3032 X(Only)s 3194 X(people)s 3402 X(who)s 3546 X(have)s 2256 X 1105 Y 2390 X(been)s 2575 X(given)s 2782 X(characters)s 3113 X(on)s 3237 X(the)s 3377 X(MUD)s 3590 X(are)s 2256 X 1178 Y 2390 X(allowed)s 2640 X(to)s 2730 X(connect)s 2976 X(to)s 3066 X(it)s 3104 X(.)s 3181 X(This)s 3338 X(is)s 3421 X(a)s 3489 X(crucial)s 2256 X 1251 Y 2390 X(feature)s 2576 X(.)s 2640 X(Any)s 2779 X(of)s 2859 X(the)s 2966 X(800)s 3090 X(users)s 3252 X(on)s 3342 X(our)s 3454 X(network)s 2256 X 1324 Y 2390 X(can)s 2528 X(send)s 2696 X(me)s 2824 X(email,)s 3037 X(but)s 3168 X(only)s 3332 X(the)s 3460 X(systems)s 2256 X 1397 Y 2390 X(group)s 2566 X(can)s 2681 X(talk)s 2804 X(to)s 2878 X(me)s 2982 X(on)s 3070 X(the)s 3174 X(MUD)s 3329 X(.)s 2256 X 1470 Y 2319 X f.Y 10 Z(\017)s 2390 X f.R 10 Z(MUDs,)s 2612 X(in)s 2689 X(conjunction)s 3029 X(with)s 3173 X(most)s 3328 X(clients,)s 3546 X(have)s 2256 X 1543 Y 2390 X(a)s 2484 X(history)s 2733 X(mechanism)s 3038 X(.)s 3141 X(Even)s 3342 X(though)s 3590 X(the)s 2256 X 1616 Y 2390 X(interaction)s 2702 X(on)s 2793 X(a)s 2848 X(MUD)s 3028 X(happens)s 3271 X(in)s 3348 X(real)s 3449 X(-time,)s 3634 X(it)s 2256 X 1689 Y 2390 X(can)s 2510 X(be)s 2600 X(recorded)s 2860 X(by)s 2953 X(a)s 3010 X(client)s 3186 X(that)s 3313 X(is)s 3384 X(connected)s 3655 X(.)s 2256 X 1762 Y 2390 X(Thus)s 2556 X(one)s 2685 X(may)s 2833 X(read)s 2981 X(a)s 3044 X(conversation)s 3419 X(that)s 3554 X(hap-)s 2256 X 1835 Y 2390 X(pened)s 2598 X(when)s 2791 X(one)s 2935 X(wasn't)s 3161 X(actively)s 3422 X(involved)s 3655 X(.)s 2256 X 1908 Y 2390 X(Clients)s 2602 X(also)s 2732 X(have)s 2880 X(the)s 2984 X(ability)s 3178 X(to)s 3252 X(save)s 3393 X(transcripts)s 2256 X 1981 Y 2390 X(to)s 2475 X(\256les,)s 2637 X(allowing)s 2903 X(for)s 3012 X(a)s 3074 X(permanent)s 3388 X(archive)s 3617 X(of)s 2256 X 2054 Y 2390 X(important)s 2672 X(communication)s 3088 X(.)s 2256 X 2148 Y 2400 X(We)s 2538 X(explored)s 2817 X(other)s 3000 X(communications)s 3488 X(tools)s 3664 X(as)s 2256 X 2221 Y(possible)s 2516 X(alternatives)s 2826 X(.)s 2906 X(A)s 2995 X(summary)s 3283 X(of)s 3378 X(our)s 3506 X(\256ndings)s 2256 X 2294 Y(and)s 2374 X(opinions)s 2625 X(is)s 2692 X(presented)s 2970 X(in)s 3044 X(the)s 3148 X(appendix)s 3392 X(.)s 2256 X 2421 Y 2473 X f.B 10 Z(Other)s 2666 X(Interesting)s 3000 X(Aspects)s 3241 X(of)s 3318 X(MUDs)s 2256 X 2530 Y 2400 X f.R 10 Z(Once)s 2575 X(we)s 2687 X(started)s 2900 X(using)s 3078 X(a)s 3142 X(MUD)s 3331 X(as)s 3421 X(a)s 3486 X(tool,)s 3642 X(we)s 2256 X 2603 Y(discovered)s 2574 X(several)s 2793 X(other)s 2958 X(useful)s 3149 X(features)s 3389 X(that)s 3518 X(we)s 3624 X(had)s 2256 X 2676 Y(not)s 2363 X(considered)s 2674 X(previously)s 2955 X(.)s 2256 X 2770 Y 2400 X(As)s 2510 X(mentioned)s 2829 X(above,)s 3042 X(MUDs)s 3260 X(provide)s 3500 X(a)s 3567 X(meta-)s 2256 X 2843 Y(phor)s 2403 X(of)s 2484 X(real)s 2611 X(life)s 2727 X(\(or)s 2830 X(virtual)s 3031 X(life\))s 3143 X(.)s 3208 X(In)s 3289 X(a)s 3345 X(MUD,)s 3542 X(people)s 2256 X 2916 Y(and)s 2384 X(things)s 2579 X(exist)s 2738 X(in)s 2823 X(a)s 2886 X(place)s 3028 X(.)s 3100 X(One)s 3244 X(interacts)s 3505 X(with)s 3657 X(an)s 2256 X 2989 Y(object)s 2457 X(as)s 2550 X(one)s 2683 X(would)s 2886 X(in)s 2975 X(real)s 3113 X(life)s 3203 X(.)s 3279 X(This)s 3434 X(creates)s 3657 X(an)s 2256 X 3062 Y(interesting)s 2566 X(context)s 2790 X(for)s 2894 X(solving)s 3117 X(problems)s 3392 X(and)s 3515 X(indicat-)s 2256 X 3135 Y(ing)s 2368 X(real)s 2469 X(-life)s 2608 X(situations)s 2865 X(.)s 2931 X(For)s 3050 X(example,)s 3321 X(in)s 3400 X(the)s 3508 X(systems)s 2256 X 3208 Y(MUD,)s 2463 X(I)s 2520 X(have)s 2681 X(an)s 2780 X(attic)s 2933 X(which)s 3132 X(is)s 3213 X(located)s 3443 X(above)s 3638 X(the)s 2256 X 3281 Y(cabin)s 2443 X(where)s 2648 X(we)s 2767 X(normally)s 3049 X(work)s 3185 X(.)s 3265 X(When)s 3465 X(I'm)s 3602 X(very)s 2256 X 3354 Y(busy)s 2404 X(in)s 2479 X(reality,)s 2691 X(I)s 2736 X(move)s 2907 X(to)s 2982 X(that)s 3106 X(attic,)s 3264 X(and)s 3384 X(leave)s 3550 X(every-)s 2256 X 3427 Y(one)s 2381 X(else)s 2515 X(in)s 2596 X(the)s 2706 X(cabin)s 2851 X(.)s 2918 X(In)s 3001 X(this)s 3126 X(way,)s 3282 X(I)s 3332 X(am)s 3442 X(out)s 3555 X(of)s 3638 X(the)s 2256 X 3500 Y(\257ow)s 2399 X(of)s 2479 X(conversation,)s 2862 X(but)s 2972 X(still)s 3099 X(available)s 3367 X(on)s 3458 X(the)s 3565 X(MUD)s 2256 X 3573 Y(if)s 2331 X(someone)s 2602 X(wishes)s 2818 X(to)s 2904 X(discuss)s 3131 X(a)s 3195 X(speci\256c)s 3434 X(issue)s 3601 X(with)s 2256 X 3646 Y(me)s 2338 X(.)s 2416 X(The)s 2559 X(spatial)s 2774 X(metaphor)s 3065 X(is)s 3149 X(also)s 3296 X(used)s 3458 X(when)s 3642 X(we)s 2256 X 3719 Y(build)s 2415 X(systems)s 2649 X(tools)s 2801 X(into)s 2927 X(the)s 3031 X(MUD)s 3186 X(.)s 2256 X 3813 Y 2400 X(Because)s 2656 X(a)s 2719 X(MUD)s 2908 X(is)s 2987 X(extensible)s 3293 X(via)s 3409 X(a)s 3473 X(program-)s 2256 X 3886 Y(ming)s 2420 X(language,)s 2705 X(the)s 2814 X(objects)s 3031 X(in)s 3110 X(the)s 3219 X(MUD)s 3401 X(can)s 3521 X(be)s 3610 X(pro-)s 2256 X 3959 Y(grammed)s 2533 X(to)s 2610 X(do)s 2702 X(anything)s 2961 X(that)s 3088 X(you)s 3213 X(could)s 3387 X(do)s 3479 X(with)s 3624 X(any)s 2256 X 4032 Y(other)s 2420 X(type)s 2562 X(of)s 2643 X(program)s 2868 X(.)s 2933 X(This)s 3078 X(is)s 3149 X(an)s 3238 X(extremely)s 3532 X(power-)s 2256 X 4105 Y(ful)s 2353 X(tool,)s 2497 X(and)s 2616 X(we)s 2717 X(are)s 2822 X(just)s 2942 X(beginning)s 3231 X(to)s 3306 X(make)s 3474 X(use)s 3586 X(of)s 3665 X(it)s 3703 X(.)s 2256 X 4178 Y(For)s 2372 X(example,)s 2640 X(we)s 2742 X(have)s 2892 X(considered)s 3205 X(constructing)s 3559 X(a)s 3613 X(ver-)s 2256 X 4251 Y(sion)s 2407 X(of)s 2502 X(a)s 2572 X(new)s 2724 X(building)s 2987 X(that)s 3129 X(the)s 3252 X(College)s 3501 X(may)s 3657 X(be)s 2256 X 4324 Y(expanding)s 2557 X(into,)s 2702 X(and)s 2821 X(then)s 2959 X(simulating)s 3265 X(the)s 3370 X(physical)s 3616 X(net-)s 2256 X 4397 Y(work)s 2415 X(connectivity)s 2769 X(within)s 2963 X(the)s 3069 X(MUD)s 3224 X(.)s 3287 X(We)s 3404 X(will)s 3533 X(do)s 3623 X(this)s 2256 X 4470 Y(before)s 2464 X(the)s 2584 X(building)s 2844 X(is)s 2927 X(built)s 3087 X(in)s 3176 X(reality,)s 3402 X(in)s 3491 X(order)s 3668 X(to)s 2256 X 4543 Y(foresee)s 2471 X(problems)s 2741 X(that)s 2864 X(may)s 3001 X(crop)s 3141 X(up)s 3207 X(.)s 2256 X 4637 Y 2400 X(One)s 2537 X(tool)s 2667 X(that)s 2794 X(currently)s 3062 X(exists)s 3242 X(in)s 3321 X(our)s 3436 X(MUD)s 3618 X(is)s 3690 X(a)s 2256 X 4710 Y(Gopher)s 2493 X(client)s 2643 X(.)s 2720 X(We)s 2850 X(ported)s 3057 X(this)s 3191 X(code)s 3354 X(from)s 3520 X(another)s 600 X 4967 Y f.B 10 Z(1993)s 754 X(LISA)s 931 X(\261)s 986 X(November)s 1305 X(1)s 1338 X(-5,)s 1432 X(1993)s 1586 X(\261)s 1641 X(Monterey,)s 1958 X(CA)s 3687 X(3)s 5280 Y pagebot %%Page: 4 4 pagetop stdencoding /NTimes-Bold /Times-Bold RE /f.B /NTimes-Bold findfont def f.B 10 Z 360 X 215 Y(Collaborative)s 771 X(Networked)s 1108 X(Communication:)s 1612 X(MUDs)s 1819 X(as)s 1900 X(Systems)s 2152 X(Tools)s 3303 X(Evard)s 360 X 448 Y stdencoding /NTimes-Roman /Times-Roman RE /f.R /NTimes-Roman findfont def f.R 10 Z(MUD,)s 564 X(where)s 759 X(it)s 829 X(was)s 965 X(originally)s 1257 X(developed)s 1563 X([Masi93])s 1807 X(.)s 360 X 521 Y(Instead)s 588 X(of)s 678 X(simply)s 895 X(running)s 1136 X(a)s 1201 X(command)s 1499 X(that)s 1635 X(pops)s 1794 X(a)s 360 X 594 Y(Gopher)s 585 X(interface)s 846 X(up)s 938 X(on)s 1031 X(the)s 1140 X(MUD,)s 1339 X(the)s 1448 X(Gopher)s 1674 X(client)s 360 X 667 Y(was)s 489 X(built)s 637 X(into)s 765 X(the)s 871 X(spatial)s 1071 X(metaphor)s 1347 X(of)s 1426 X(the)s 1532 X(MUD,)s 1728 X(and)s 360 X 740 Y(exists)s 546 X(in)s 631 X(the)s 746 X(MUD)s 934 X(as)s 1023 X(a)s 1086 X("Gopher)s 1345 X(slate",)s 1546 X(something)s 360 X 813 Y(like)s 491 X(a)s 551 X(portable)s 800 X(computer)s 1052 X(.)s 1121 X(People)s 1333 X(in)s 1414 X(the)s 1525 X(MUD)s 1709 X(may)s 360 X 886 Y(make)s 534 X(their)s 686 X(own)s 829 X(Gopher)s 1057 X(slates)s 1236 X(and)s 1362 X(manipulate)s 1690 X(them)s 360 X 959 Y(by)s 463 X(navigating)s 782 X(Gopher)s 1018 X(menus,)s 1246 X(much)s 1431 X(like)s 1569 X(one)s 1702 X(does)s 360 X 1032 Y(with)s 517 X(a)s 586 X(conventional)s 970 X(Gopher)s 1208 X(client)s 1358 X(.)s 1436 X(Gopher)s 1674 X(slates)s 360 X 1105 Y(differ)s 537 X(from)s 695 X(other)s 860 X(clients)s 1064 X(in)s 1144 X(that)s 1273 X(they)s 1416 X(may)s 1559 X(be)s 1650 X(shared)s 360 X 1178 Y(with)s 506 X(other)s 670 X(participants)s 1010 X(in)s 1089 X(the)s 1198 X(MUD)s 1380 X(\261)s 1440 X(one)s 1563 X(can)s 1684 X(bring)s 360 X 1251 Y(up)s 450 X(a)s 504 X(document)s 791 X(on)s 880 X(a)s 933 X(Gopher)s 1155 X(slate)s 1302 X(and)s 1421 X(then)s 1559 X(hand)s 1711 X(it)s 1772 X(to)s 360 X 1324 Y(someone)s 620 X(so)s 702 X(that)s 826 X(they)s 964 X(too)s 1072 X(can)s 1188 X(read)s 1326 X(it,)s 1404 X(or)s 1483 X(they)s 1622 X(can)s 1739 X(put)s 360 X 1397 Y(it)s 431 X(on)s 530 X(a)s 593 X(table)s 757 X(and)s 886 X(jointly)s 1094 X(manipulate)s 1424 X(it)s 1462 X(.)s 1533 X(The)s 1669 X(MUD)s 360 X 1470 Y(has)s 474 X(then)s 614 X(become)s 847 X(a)s 902 X(way)s 1038 X(in)s 1115 X(which)s 1303 X(we)s 1407 X(can)s 1526 X(collaborate)s 360 X 1543 Y(in)s 434 X(our)s 544 X(use)s 655 X(of)s 732 X(Internet)s 962 X(resources)s 1214 X(.)s 360 X 1637 Y 504 X(Other)s 689 X(items)s 868 X(in)s 954 X(the)s 1070 X(MUD)s 1259 X(that)s 1394 X(have)s 1554 X(been)s 1714 X(pro-)s 360 X 1710 Y(grammed)s 639 X(are)s 748 X(a)s 805 X(dictionary,)s 1120 X(a)s 1177 X(weather)s 1416 X(map,)s 1575 X(and)s 1698 X(vari-)s 360 X 1783 Y(ous)s 474 X(systems)s 708 X(status)s 883 X(monitors)s 1120 X(.)s 360 X 1910 Y 850 X f.B 10 Z(Running)s 1120 X(a)s 1175 X(MUD)s 360 X 2019 Y 504 X f.R 10 Z(We)s 632 X(are)s 749 X(running)s 990 X(a)s 1055 X(type)s 1205 X(of)s 1295 X(MUD)s 1486 X(known)s 1702 X(as)s 1794 X(a)s 360 X 2092 Y(MOO,)s 564 X(which)s 759 X(stands)s 958 X(for)s 1067 X(MUD,)s 1271 X(Object)s 1450 X(-Oriented)s 1706 X(.)s 1776 X(A)s 360 X 2165 Y(MOO)s 559 X(keeps)s 755 X(the)s 881 X(database)s 1156 X(of)s 1255 X(objects)s 1489 X(in)s 1585 X(memory,)s 360 X 2238 Y(which)s 566 X(means)s 780 X(that)s 924 X(the)s 1049 X(process)s 1291 X(tends)s 1474 X(to)s 1568 X(be)s 1673 X(large)s 1807 X(.)s 360 X 2311 Y(Other)s 541 X(types)s 711 X(of)s 795 X(MUDs)s 1005 X(keep)s 1160 X(unreferenced)s 1538 X(objects)s 1758 X(on)s 360 X 2384 Y(disk,)s 513 X(and)s 634 X(therefore)s 900 X(take)s 1037 X(up)s 1128 X(less)s 1254 X(in)s 1306 X(-core)s 1468 X(memory)s 1690 X(.)s 1731 X(We)s 360 X 2457 Y(chose)s 554 X(to)s 648 X(use)s 779 X(a)s 852 X(MOO)s 1050 X(because)s 1305 X(of)s 1403 X(possible)s 1665 X(future)s 360 X 2530 Y(research)s 623 X(directions;)s 946 X(had)s 1081 X(we)s 1198 X(been)s 1363 X(concerned)s 1676 X(about)s 360 X 2603 Y(computing)s 681 X(resources,)s 986 X(it)s 1061 X(would)s 1264 X(have)s 1427 X(been)s 1590 X(wiser)s 1772 X(to)s 360 X 2676 Y(choose)s 567 X(a)s 619 X(different)s 871 X(type)s 1008 X(of)s 1085 X(MUD)s 1262 X(server)s 1425 X(.)s 360 X 2770 Y 504 X(MUDs)s 725 X(can)s 858 X(be)s 961 X(run)s 1089 X(on)s 1196 X(practically)s 1521 X(any)s 1658 X(UNIX)s 360 X 2843 Y(machine;)s 651 X(we're)s 848 X(running)s 1099 X(our)s 1231 X(MOO)s 1430 X(on)s 1540 X(a)s 1614 X(SPARC)s 360 X 2916 Y(670/MP)s 574 X(.)s 656 X(It)s 740 X(currently)s 1025 X(takes)s 1207 X(9)s 1284 X(megabytes)s 1614 X(of)s 1713 X(disk)s 360 X 2989 Y(space)s 534 X(to)s 611 X(store)s 766 X(the)s 873 X(code)s 1024 X(and)s 1144 X(several)s 1358 X(backup)s 1574 X(copies)s 1769 X(of)s 360 X 3062 Y(the)s 483 X(object)s 688 X(database)s 919 X(.)s 999 X(The)s 1144 X(process)s 1385 X(takes)s 1565 X(anywhere)s 360 X 3135 Y(from)s 522 X(5)s 588 X(to)s 673 X(15)s 772 X(megabytes)s 1091 X(of)s 1178 X(memory,)s 1449 X(depending)s 1758 X(on)s 360 X 3208 Y(what)s 514 X(is)s 583 X(happening)s 884 X(within)s 1079 X(the)s 1185 X(MOO)s 1340 X(.)s 1403 X(We)s 1520 X(have)s 1670 X(found)s 360 X 3281 Y(that)s 494 X(the)s 609 X(server)s 805 X(does)s 960 X(not)s 1078 X(create)s 1272 X(an)s 1368 X(appreciable)s 1709 X(load)s 360 X 3354 Y(on)s 453 X(the)s 562 X(computer,)s 858 X(and)s 981 X(could)s 1157 X(be)s 1248 X(run)s 1364 X(unobtrusively)s 1758 X(on)s 360 X 3427 Y(a)s 420 X(slower)s 628 X(machine)s 885 X(without)s 1119 X(any)s 1245 X(trouble;)s 1483 X(we)s 1591 X(used)s 1742 X(the)s 360 X 3500 Y(SPARC)s 606 X(simply)s 824 X(because)s 1072 X(it)s 1146 X(was)s 1286 X(available)s 1565 X(when)s 1746 X(we)s 360 X 3573 Y(started)s 561 X(the)s 665 X(MUD)s 820 X(.)s 360 X 3667 Y 504 X(The)s 633 X(MUD)s 813 X(client)s 988 X(runs)s 1127 X(on)s 1218 X(whatever)s 1489 X(machine)s 1742 X(the)s 360 X 3740 Y(user)s 497 X(is)s 568 X(using)s 712 X(.)s 777 X(It)s 844 X(is)s 915 X(possible)s 1160 X(to)s 1238 X(use)s 1353 X f.B 10 Z(telnet)s 1539 X f.R 10 Z(to)s 1616 X(connect)s 360 X 3813 Y(to)s 444 X(the)s 558 X(MUD)s 713 X(.)s 784 X(Telnet)s 988 X(is)s 1065 X(not)s 1183 X(the)s 1298 X(most)s 1461 X(useful)s 1657 X(client,)s 360 X 3886 Y(however,)s 632 X(because)s 870 X(it)s 934 X(doesn't)s 1156 X(separate)s 1401 X(input)s 1563 X(from)s 1717 X(out-)s 360 X 3959 Y(put,)s 487 X(and)s 608 X(the)s 715 X(output)s 910 X(from)s 1064 X(the)s 1172 X(MUD)s 1353 X(tends)s 1520 X(to)s 1598 X(get)s 1706 X(con-)s 360 X 4032 Y(fused)s 535 X(with)s 684 X(the)s 796 X(command)s 1089 X(that)s 1220 X(one)s 1346 X(is)s 1421 X(trying)s 1610 X(to)s 1692 X(type)s 1807 X(.)s 360 X 4105 Y(Specialized)s 700 X(clients)s 906 X(that)s 1037 X(are)s 1150 X(easier)s 1338 X(to)s 1421 X(use)s 1541 X(have)s 1698 X(been)s 360 X 4178 Y(written)s 584 X(for)s 695 X(for)s 805 X(the)s 920 X(X)s 1001 X(Window)s 1263 X(System,)s 1510 X(emacs,)s 1728 X(and)s 360 X 4251 Y(for)s 459 X(several)s 671 X(types)s 834 X(of)s 911 X(personal)s 1159 X(computers)s 1437 X(.)s 360 X 4345 Y 504 X(For)s 623 X(the)s 732 X(most)s 889 X(part,)s 1037 X(the)s 1146 X(members)s 1419 X(of)s 1502 X(the)s 1612 X(systems)s 360 X 4418 Y(group)s 545 X(use)s 665 X(a)s 725 X(client)s 905 X(for)s 1012 X(emacs)s 1210 X(named)s 1418 X f.B 10 Z(mud)s 1548 X(.el)s f.R 10 Z(,)s 1661 X(which)s 360 X 4491 Y(connects)s 627 X(to)s 713 X(a)s 777 X(MUD)s 966 X(within)s 1171 X(an)s 1268 X(emacs)s 1470 X(buffer)s 1632 X(.)s 1705 X(This)s 360 X 4564 Y(allows)s 559 X(one)s 679 X(to)s 755 X(edit)s 880 X(commands)s 1192 X(before)s 1385 X(sending)s 1615 X(them)s 1772 X(to)s 360 X 4637 Y(the)s 468 X(MUD,)s 666 X(to)s 744 X(capture)s 967 X(output)s 1164 X(into)s 1295 X(another)s 1522 X(buffer,)s 1728 X(and)s 360 X 4710 Y(to)s 439 X(keep)s 592 X(a)s 649 X(history)s 861 X(of)s 943 X(everything)s 1255 X(that)s 1383 X(happened)s 1664 X(in)s 1742 X(the)s 2016 X 448 Y(MUD)s 2199 X(that)s 2328 X(may)s 2471 X(be)s 2562 X(viewed)s 2783 X(as)s 2867 X("scrollback")s 3224 X(at)s 3301 X(a)s 3360 X(later)s 2016 X 521 Y(date)s 2128 X(.)s 2195 X(Using)s 2382 X(emacs)s 2578 X(also)s 2714 X(makes)s 2913 X(it)s 2979 X(convenient)s 3300 X(to)s 3379 X(edit)s 2016 X 594 Y(code)s 2164 X(for)s 2263 X(objects)s 2475 X(within)s 2668 X(the)s 2772 X(MUD)s 2949 X(itself)s 3084 X(.)s 2016 X 688 Y 2160 X(Typically,)s 2461 X(a)s 2518 X(member)s 2764 X(of)s 2846 X(the)s 2955 X(group)s 3137 X(will)s 3270 X(start)s 3414 X(up)s 2016 X 761 Y(a)s 2072 X(small)s 2218 X(-sized)s 2404 X(emacs)s 2598 X(on)s 2690 X(their)s 2838 X(workstation,)s 3195 X(connect)s 3428 X(to)s 2016 X 834 Y(the)s 2120 X(MUD,)s 2314 X(and)s 2432 X(then)s 2569 X(leave)s 2734 X(it)s 2795 X(going)s 2969 X(for)s 3069 X(the)s 3174 X(whole)s 3360 X(time)s 2016 X 907 Y(that)s 2141 X(they)s 2280 X(are)s 2386 X(logged)s 2591 X(in,)s 2684 X(occasionally)s 3042 X(glancing)s 3295 X(at)s 3367 X(it)s 3428 X(to)s 2016 X 980 Y(see)s 2130 X(what's)s 2336 X(happening)s 2613 X(.)s 2680 X(Some)s 2861 X(people)s 3068 X(use)s 3186 X(the)s 3297 X f.B 10 Z(screen)s 2016 X 1053 Y f.R 10 Z(program)s 2267 X(to)s 2344 X(start)s 2485 X(an)s 2573 X(session)s 2791 X(that)s 2917 X(may)s 3057 X(be)s 3145 X(moved)s 3351 X(from)s 2016 X 1126 Y(one)s 2142 X(controlling)s 2465 X(terminal)s 2719 X(to)s 2801 X(another;)s 3050 X(this)s 3178 X(allows)s 3384 X(one)s 2016 X 1199 Y(to)s 2109 X(login)s 2286 X(to)s 2378 X(the)s 2500 X(workstation)s 2855 X(from)s 3024 X(another)s 3264 X(location)s 2016 X 1272 Y(\(from)s 2213 X(home,)s 2424 X(for)s 2547 X(example\),)s 2859 X(without)s 3109 X(disconnecting)s 2016 X 1345 Y(from)s 2181 X(the)s 2299 X(MUD)s 2454 X(.)s 2529 X(In)s 2620 X(this)s 2753 X(way,)s 2917 X(one)s 3049 X(may)s 3200 X(read)s 3350 X(what)s 2016 X 1418 Y(happened)s 2304 X(while)s 2486 X(one)s 2615 X(was)s 2752 X(absent,)s 2973 X(and)s 3102 X(keep)s 3261 X(up)s 3361 X(with)s 2016 X 1491 Y(any)s 2146 X(happenings)s 2449 X(.)s 2521 X(Other)s 2706 X(people)s 2917 X(prefer)s 3109 X(to)s 3194 X(disconnect)s 2016 X 1564 Y(completely)s 2336 X(when)s 2502 X(they're)s 2713 X(not)s 2820 X(going)s 2993 X(to)s 3067 X(be)s 3152 X(around)s 3336 X(.)s 2016 X 1691 Y 2310 X f.B 10 Z(Experiences)s 2678 X(and)s 2807 X(Observations)s 2016 X 1800 Y 2160 X f.R 10 Z(The)s 2297 X(original)s 2538 X(environment)s 2908 X(that)s 3043 X(we)s 3155 X(built)s 3312 X(was)s 3450 X(a)s 2016 X 1873 Y(replica)s 2232 X(of)s 2320 X(the)s 2435 X(building)s 2690 X(that)s 2824 X(we)s 2934 X(work)s 3102 X(in)s 3154 X(.)s 3225 X(Everyone)s 2016 X 1946 Y(built)s 2161 X(their)s 2306 X(of\256ce,)s 2497 X(we)s 2597 X(implemented)s 2969 X(a)s 3021 X(network)s 3261 X(that)s 3384 X(one)s 2016 X 2019 Y(could)s 2199 X(travel)s 2387 X(through,)s 2645 X(and)s 2776 X(we)s 2889 X(constructed)s 3232 X(a)s 3297 X(central)s 2016 X 2092 Y(meeting)s 2261 X(place)s 2403 X(.)s 2471 X(But)s 2597 X(we)s 2705 X(found)s 2889 X(that)s 3020 X(having)s 3231 X(one)s 3357 X(real)s 3458 X(-)s 2016 X 2165 Y(life)s 2149 X(version)s 2388 X(of)s 2486 X(our)s 2617 X(urban)s 2811 X(university)s 3121 X(was)s 3268 X(enough)s 3463 X(.)s 2016 X 2238 Y(Instead,)s 2257 X(we)s 2366 X(created)s 2591 X(a)s 2652 X(virtual)s 2859 X(space)s 3040 X(that)s 3173 X(is)s 3250 X(different)s 2016 X 2311 Y(and)s 2136 X(somewhat)s 2431 X(more)s 2592 X(pleasant,)s 2853 X(and)s 2972 X(this)s 3092 X(has)s 3204 X(seemed)s 3428 X(to)s 2016 X 2384 Y(change)s 2227 X(the)s 2331 X(mood)s 2504 X(of)s 2581 X(the)s 2685 X(MUD)s 2862 X(for)s 2961 X(the)s 3065 X(better)s 3218 X(.)s 2016 X 2478 Y 2160 X(We)s 2277 X(have)s 2427 X(named)s 2629 X(the)s 2735 X(MUD)s 2914 X(environment)s 3276 X(that)s 3402 X(we)s 2016 X 2551 Y(built)s 2161 X(``The)s 2331 X(InfoPark'')s 2607 X(.)s 2668 X(The)s 2794 X(InfoPark)s 3048 X(is)s 3115 X(in)s 3189 X(an)s 3274 X(outdoor)s 2016 X 2624 Y(setting,)s 2234 X(with)s 2375 X(trees,)s 2541 X(streams,)s 2785 X(and)s 2903 X(animals)s 3112 X(.)s 3173 X(In)s 3250 X(the)s 3354 X(mid-)s 2016 X 2697 Y(dle)s 2130 X(of)s 2217 X(a)s 2279 X(forest)s 2463 X(is)s 2540 X(a)s 2601 X(cabin,)s 2794 X(where)s 2988 X(most)s 3149 X(members)s 3425 X(of)s 2016 X 2770 Y(the)s 2152 X(systems)s 2419 X(group)s 2628 X(go)s 2749 X(when)s 2948 X(they're)s 3192 X(connected)s 3463 X(.)s 2016 X 2843 Y(We've)s 2220 X(also)s 2353 X(built)s 2501 X(a)s 2556 X(university)s 2848 X(campus)s 3077 X(for)s 3179 X(use)s 3293 X(by)s 3384 X(one)s 2016 X 2916 Y(of)s 2111 X(the)s 2233 X(research)s 2496 X(groups)s 2716 X(within)s 2928 X(the)s 3051 X(College,)s 3317 X(where)s 2016 X 2989 Y(they)s 2153 X(plan)s 2290 X(to)s 2364 X(hold)s 2504 X(on)s 2570 X(-line)s 2715 X(meetings)s 2957 X(.)s 2016 X 3083 Y 2160 X(We)s 2286 X(have)s 2445 X(found)s 2632 X(that)s 2766 X(the)s 2881 X(MUD)s 3069 X(is)s 3148 X(an)s 3245 X(effective)s 2016 X 3156 Y(way)s 2161 X(to)s 2246 X(hold)s 2397 X(pre)s 2482 X(-arranged)s 2770 X(meetings)s 3045 X(for)s 3155 X(people)s 3366 X(who)s 2016 X 3229 Y(can't)s 2172 X(be)s 2257 X(in)s 2331 X(the)s 2435 X(same)s 2595 X(physical)s 2841 X(location)s 3057 X(.)s 3119 X(We)s 3235 X(have)s 3384 X(had)s 2016 X 3302 Y(virtual)s 2227 X(systems)s 2475 X(meetings)s 2753 X(three)s 2923 X(or)s 3014 X(four)s 3159 X(times,)s 3357 X(each)s 2016 X 3375 Y(about)s 2200 X(various)s 2432 X(topics)s 2592 X(.)s 2667 X(We)s 2796 X(save)s 2951 X(a)s 3017 X(transcript)s 3306 X(of)s 3398 X(the)s 2016 X 3448 Y(meeting)s 2258 X(and)s 2380 X(email)s 2556 X(it)s 2620 X(to)s 2698 X(people)s 2902 X(who)s 3041 X(weren't)s 3270 X(present,)s 2016 X 3521 Y(and)s 2134 X(refer)s 2282 X(to)s 2356 X(it)s 2416 X(when)s 2582 X(trying)s 2764 X(to)s 2839 X(remember)s 3133 X(exactly)s 3350 X(what)s 2016 X 3594 Y(issues)s 2200 X(had)s 2320 X(been)s 2470 X(raised)s 2630 X(.)s 2693 X(Using)s 2875 X(a)s 2928 X(MUD)s 3106 X(in)s 3181 X(this)s 3301 X(way)s 3435 X(is)s 2016 X 3667 Y(not)s 2129 X(as)s 2213 X(time)s 2333 X(-effective)s 2618 X(as)s 2702 X(meeting)s 2946 X(in)s 3026 X(reality,)s 3243 X(but)s 3357 X(is)s 3431 X(at)s 2016 X 3740 Y(least)s 2162 X(as)s 2240 X(useful)s 2425 X(as)s 2503 X(having)s 2706 X(a)s 2758 X(conference)s 3073 X(telephone)s 3355 X(call)s 3453 X(.)s 2016 X 3834 Y 2160 X(We)s 2275 X(use)s 2386 X(the)s 2490 X(MUD)s 2667 X(as)s 2745 X(a)s 2798 X(coordination)s 3158 X(mechanism)s 3463 X(.)s 2016 X 3907 Y(People)s 2224 X(tend)s 2365 X(to)s 2443 X(announce)s 2724 X(on)s 2816 X(the)s 2923 X(MUD)s 3103 X(what)s 3258 X(they)s 3398 X(are)s 2016 X 3980 Y(doing)s 2194 X(in)s 2273 X(real)s 2401 X(life)s 2491 X(.)s 2557 X(Phrases)s 2788 X(like)s 2917 X(``Jim)s 3086 X(heads)s 3266 X(into)s 3398 X(the)s 2016 X 4053 Y(machine)s 2266 X(room)s 2429 X(to)s 2504 X(check)s 2682 X(the)s 2786 X(tapes'',)s 3007 X(``Ivan)s 3191 X(is)s 3258 X(about)s 3428 X(to)s 2016 X 4126 Y(reboot)s 2213 X(amber'',)s 2468 X(or)s 2550 X(``I'm)s 2717 X(hungry,)s 2949 X(who's)s 3139 X(interested)s 3428 X(in)s 2016 X 4199 Y(lunch?'')s 2263 X(are)s 2370 X(commonly)s 2680 X(seen)s 2799 X(.)s 2862 X(We)s 2979 X(have)s 3129 X(found)s 3307 X(this)s 3428 X(to)s 2016 X 4272 Y(be)s 2109 X(so)s 2198 X(useful)s 2391 X(that)s 2522 X(we)s 2630 X(have)s 2786 X(encouraged)s 3123 X(it)s 3191 X(by)s 3287 X(writing)s 2016 X 4345 Y(utilities)s 2244 X(that)s 2370 X(people)s 2573 X(can)s 2691 X(use)s 2805 X(to)s 2882 X(indicate)s 3120 X(why)s 3259 X(they)s 3398 X(are)s 2016 X 4418 Y(``idling'')s 2285 X(in)s 2362 X(the)s 2469 X(MUD)s 2624 X(.)s 2688 X(A)s 2761 X(character)s 3033 X(is)s 3104 X(called)s 3291 X(``idle'')s 2016 X 4491 Y(when)s 2197 X(they)s 2349 X(do)s 2452 X(not)s 2574 X(respond)s 2821 X(to)s 2910 X(activities)s 3191 X(within)s 3398 X(the)s 2016 X 4564 Y(MUD)s 2171 X(.)s 2238 X(This)s 2385 X(normally)s 2654 X(happens)s 2900 X(because)s 3140 X(the)s 3251 X(user)s 3391 X(has)s 2016 X 4637 Y(quit)s 2151 X(paying)s 2363 X(attention)s 2629 X(to)s 2712 X(the)s 2825 X(MUD)s 3011 X(for)s 3118 X(some)s 3289 X(reason)s 3463 X(.)s 2016 X 4710 Y(When)s 2207 X(a)s 2269 X(character)s 2547 X(is)s 2624 X(idling)s 2812 X(``for)s 2966 X(of\256ce)s 3151 X(visitors'')s 3425 X(or)s 360 X 4967 Y f.B 10 Z(4)s 2026 X(1993)s 2180 X(LISA)s 2357 X(\261)s 2412 X(November)s 2731 X(1)s 2764 X(-5,)s 2858 X(1993)s 3012 X(\261)s 3067 X(Monterey,)s 3384 X(CA)s 5280 Y pagebot %%Page: 5 5 pagetop stdencoding /NTimes-Bold /Times-Bold RE /f.B /NTimes-Bold findfont def f.B 10 Z 600 X 215 Y(Evard)s 1773 X(Collaborative)s 2184 X(Networked)s 2521 X(Communication:)s 3025 X(MUDs)s 3232 X(as)s 3313 X(Systems)s 3565 X(Tools)s 600 X 448 Y stdencoding /NTimes-Roman /Times-Roman RE /f.R /NTimes-Roman findfont def f.R 10 Z(``to)s 722 X(drive)s 884 X(home'',)s 1118 X(the)s 1225 X(other)s 1387 X(participants)s 1725 X(in)s 1802 X(the)s 1909 X(MUD)s 600 X 521 Y(can)s 722 X(look)s 869 X(at)s 947 X(that)s 1077 X(character)s 1352 X(and)s 1478 X(see)s 1594 X(why)s 1738 X(it)s 1806 X(idled)s 1940 X(.)s 2009 X(In)s 600 X 594 Y(this)s 737 X(way,)s 905 X(we)s 1023 X(use)s 1152 X(the)s 1273 X(text)s 1374 X(-based)s 1587 X(virtual)s 1801 X(reality)s 2012 X(to)s 600 X 667 Y(re\257ect)s 805 X(what)s 972 X(is)s 1054 X(happening)s 1368 X(in)s 1457 X(real)s 1596 X(life)s 1686 X(.)s 1763 X(Before)s 1982 X(the)s 600 X 740 Y(MUD,)s 800 X(we)s 906 X(saw)s 1038 X(each)s 1188 X(other)s 1352 X(only)s 1497 X(at)s 1573 X(meetings,)s 1859 X(or)s 1941 X(after)s 600 X 813 Y(running)s 840 X(all)s 942 X(over)s 1094 X(the)s 1210 X(building)s 1466 X(trying)s 1659 X(to)s 1745 X(locate)s 1941 X(each)s 600 X 886 Y(other)s 737 X(.)s 600 X 980 Y 744 X(The)s 874 X(MUD)s 1055 X(is)s 1126 X(used)s 1274 X(as)s 1356 X(a)s 1412 X(quick)s 1586 X(brain)s 1723 X(-storming)s 2009 X(or)s 600 X 1053 Y(problem)s 822 X(-solving)s 1073 X(mechanism,)s 1428 X(often)s 1598 X(in)s 1683 X(response)s 1949 X(to)s 2034 X(a)s 600 X 1126 Y(recent)s 788 X(email)s 962 X(message)s 1189 X(.)s 1252 X(It's)s 1365 X(common)s 1622 X(for)s 1723 X(us)s 1806 X(to)s 1883 X(have)s 2034 X(a)s 600 X 1199 Y(\256ve)s 700 X(-minute)s 935 X(conversation)s 1303 X(on)s 1396 X(the)s 1505 X(MUD)s 1687 X(about)s 1862 X(a)s 1918 X(small)s 600 X 1272 Y(systems)s 841 X(issue,)s 1021 X(such)s 1172 X(as)s 1257 X(some)s 1427 X(detail)s 1606 X(of)s 1690 X(DNS,)s 1869 X(how)s 2012 X(to)s 600 X 1345 Y(implement)s 911 X(an)s 998 X(extension)s 1278 X(to)s 1354 X(the)s 1460 X(\256le)s 1570 X(system,)s 1797 X(or)s 1875 X(how)s 2012 X(to)s 600 X 1418 Y(\256x)s 692 X(some)s 855 X(user's)s 1036 X(problem)s 1258 X(.)s 1319 X(Previously,)s 1644 X(these)s 1805 X(conversa-)s 600 X 1491 Y(tions)s 770 X(would)s 976 X(have)s 1141 X(happened)s 1435 X(through)s 1680 X(slower)s 1897 X(email,)s 600 X 1564 Y(through)s 832 X(of\256ce)s 1010 X(visits,)s 1195 X(or)s 1276 X(at)s 1351 X(regular)s 1566 X(systems)s 1805 X(meetings)s 2047 X(.)s 600 X 1637 Y(All)s 712 X(of)s 793 X(these)s 957 X(mechanisms)s 1314 X(are)s 1422 X(more)s 1585 X(cumbersome,)s 1968 X(and)s 600 X 1710 Y(would)s 803 X(have)s 966 X(happened)s 1258 X(much)s 1443 X(less)s 1581 X(frequently)s 1855 X(.)s 1931 X(Thus)s 600 X 1783 Y(the)s 704 X(MUD)s 881 X(has)s 992 X(enabled)s 1222 X(new)s 1355 X(communications)s 1819 X(patterns)s 2031 X(.)s 600 X 1877 Y 744 X(The)s 878 X(largest)s 1087 X(unexpected)s 1421 X(bene\256t)s 1634 X(of)s 1720 X(the)s 1833 X(MUD)s 2019 X(is)s 600 X 1950 Y(that)s 727 X(it)s 791 X(created)s 1011 X(a)s 1066 X(social)s 1248 X(environment)s 1610 X(that)s 1736 X(didn't)s 1920 X(exist)s 2047 X(.)s 600 X 2023 Y(People)s 820 X(have)s 984 X(real)s 1123 X(conversations)s 1528 X(on)s 1632 X(the)s 1752 X(MUD)s 1945 X(with)s 600 X 2096 Y(other)s 789 X(participants)s 1102 X(.)s 1193 X(These)s 1405 X(are)s 1539 X(typically,)s 1843 X(but)s 1979 X(not)s 600 X 2169 Y(always,)s 846 X(about)s 1038 X(systems)s 1250 X(-related)s 1499 X(issues)s 1659 X(.)s 1742 X(Because)s 2009 X(of)s 600 X 2242 Y(this,)s 748 X(members)s 1027 X(of)s 1115 X(the)s 1230 X(group)s 1417 X(\256nd)s 1553 X(out)s 1671 X(about)s 1852 X(projects)s 600 X 2315 Y(that)s 725 X(they're)s 938 X(not)s 1047 X(involved)s 1304 X(in)s 1356 X(.)s 1419 X(The)s 1547 X(new)s 1683 X(undergraduate)s 600 X 2388 Y(volunteers)s 901 X(come)s 1069 X(to)s 1143 X(know)s 1312 X(senior)s 1497 X(members)s 1764 X(of)s 1841 X(the)s 1945 X(staff)s 600 X 2461 Y(that)s 726 X(they)s 866 X(would)s 1057 X(otherwise)s 1343 X(not)s 1454 X(recognize)s 1714 X(.)s 1779 X(The)s 1909 X(MUD)s 600 X 2534 Y(has)s 713 X(become)s 945 X(a)s 999 X(social)s 1180 X(place)s 1346 X(for)s 1446 X(the)s 1551 X(systems)s 1786 X(group)s 1963 X(that)s 600 X 2607 Y(is)s 674 X(populated)s 966 X(even)s 1121 X(when)s 1294 X(everyone)s 1567 X(is)s 1642 X(logged)s 1853 X(in)s 1935 X(from)s 600 X 2680 Y(home)s 748 X(.)s 826 X(It)s 906 X(may)s 1059 X(be)s 1160 X(said)s 1306 X(that)s 1445 X(this)s 1580 X(takes)s 1756 X(away)s 1935 X(from)s 600 X 2753 Y(work)s 761 X(hours,)s 950 X(or)s 1030 X(cuts)s 1163 X(down)s 1335 X(on)s 1427 X(effectivity)s 1729 X(while)s 1904 X(in)s 1982 X(the)s 600 X 2826 Y(of\256ce)s 752 X(.)s 827 X(But,)s 976 X(over)s 1129 X(time,)s 1301 X(we)s 1414 X(have)s 1575 X(seen)s 1729 X(our)s 1852 X(systems)s 600 X 2899 Y(group,)s 810 X(people)s 1027 X(who)s 1180 X(had)s 1315 X(simply)s 1536 X(worked)s 1775 X(on)s 1881 X(related)s 600 X 2972 Y(jobs,)s 767 X(grow)s 942 X(into)s 1085 X(a)s 1154 X(real)s 1293 X(team)s 1424 X(.)s 1501 X(This)s 1658 X(change)s 1885 X(is)s 1968 X(due)s 600 X 3045 Y(partly)s 778 X(to)s 852 X(our)s 962 X(shared)s 1158 X(social)s 1337 X(context)s 1534 X(.)s 600 X 3139 Y 744 X(It)s 807 X(is)s 875 X(common)s 1131 X(for)s 1231 X(someone)s 1491 X(on)s 1580 X(the)s 1685 X(MUD)s 1863 X(to)s 1938 X(have)s 600 X 3212 Y(a)s 660 X(real)s 761 X(-life)s 903 X(interruption,)s 1265 X(be)s 1358 X(it)s 1426 X(a)s 1485 X(phone)s 1676 X(call,)s 1820 X(an)s 1912 X(of\256ce)s 600 X 3285 Y(visitor,)s 810 X(or)s 887 X(simply)s 1091 X(being)s 1261 X(too)s 1368 X(busy)s 1516 X(to)s 1591 X(pay)s 1710 X(any)s 1829 X(attention)s 600 X 3358 Y(to)s 682 X(the)s 794 X(MUD)s 949 X(.)s 1018 X(Thus)s 1181 X(people)s 1389 X(tend)s 1533 X(to)s 1614 X(become)s 1851 X(inactive)s 600 X 3431 Y(suddenly)s 869 X(on)s 965 X(the)s 1077 X(MUD)s 1232 X(.)s 1301 X(This)s 1450 X(doesn't)s 1676 X(create)s 1867 X(a)s 1927 X(com-)s 600 X 3504 Y(munications)s 963 X(problem)s 1221 X(\261)s 1290 X(whenever)s 1585 X(they)s 1736 X(resume,)s 1982 X(the)s 600 X 3577 Y(buffer)s 791 X(is)s 865 X(there,)s 1045 X(containing)s 1356 X(the)s 1467 X(old)s 1581 X(conversation,)s 1968 X(and)s 600 X 3650 Y(it)s 666 X(can)s 787 X(be)s 878 X(continued)s 1169 X(without)s 1400 X(dif\256culty)s 1645 X(.)s 1711 X(The)s 1842 X(problem)s 600 X 3723 Y(it)s 665 X(presents)s 911 X(is)s 983 X(when)s 1154 X(one)s 1277 X(needs)s 1456 X(to)s 1535 X(\256nd)s 1666 X(a)s 1724 X(speci\256c)s 1957 X(per-)s 600 X 3796 Y(son)s 720 X(who)s 862 X(is)s 935 X(on)s 1029 X(the)s 1139 X(MUD)s 1322 X(but)s 1434 X(isn't)s 1580 X(paying)s 1788 X(any)s 1911 X(atten-)s 600 X 3869 Y(tion)s 731 X(to)s 810 X(it)s 848 X(.)s 914 X(Our)s 1044 X(solution)s 1286 X(is)s 1358 X(to)s 1437 X(use)s 1553 X(a)s 1610 X(paging)s 1818 X(verb)s 1963 X(that)s 600 X 3942 Y(causes)s 800 X(the)s 907 X(idle)s 1033 X(person's)s 1283 X(terminal)s 1532 X(to)s 1609 X(make)s 1779 X(an)s 1867 X(audible)s 600 X 4015 Y(beep)s 726 X(.)s 798 X(If)s 875 X(that)s 1009 X(person)s 1220 X(can,)s 1364 X(they)s 1513 X(will)s 1652 X(respond)s 1896 X(to)s 1982 X(the)s 600 X 4088 Y(MUD)s 755 X(.)s 822 X(If)s 894 X(they)s 1037 X(can't,)s 1216 X(they)s 1359 X(probably)s 1622 X(aren't)s 1805 X(anywhere)s 600 X 4161 Y(near)s 770 X(a)s 855 X(computer)s 1107 X(.)s 1202 X(This)s 1377 X(is)s 1478 X(when)s 1678 X(communicator)s 600 X 4234 Y(badges)s 812 X(would)s 1005 X(come)s 1177 X(in)s 1256 X(handy)s 1445 X(\(or)s 1549 X(be)s 1639 X(horribly)s 1880 X(annoy-)s 600 X 4307 Y(ing,)s 724 X(depending)s 1023 X(on)s 1111 X(your)s 1254 X(point)s 1413 X(of)s 1490 X(view\))s 1642 X(.)s 600 X 4401 Y 744 X(Many)s 923 X(of)s 1002 X(the)s 1108 X(undergraduates)s 1539 X(who)s 1677 X(work)s 1838 X(with)s 1982 X(the)s 600 X 4474 Y(group)s 780 X(have)s 932 X(cooperative)s 1270 X(education)s 1556 X(jobs)s 1693 X(in)s 1771 X(other)s 1934 X(parts)s 600 X 4547 Y(of)s 693 X(Boston)s 881 X(.)s 958 X(During)s 1184 X(the)s 1305 X(day,)s 1457 X(or)s 1551 X(even)s 1716 X(for)s 1832 X(a)s 1901 X(whole)s 600 X 4620 Y(summer,)s 860 X(they)s 1003 X(are)s 1113 X(unable)s 1319 X(to)s 1399 X(come)s 1571 X(into)s 1702 X(Northeastern)s 2047 X(.)s 600 X 4693 Y(Because)s 850 X(they)s 992 X(stay)s 1127 X(on)s 1221 X(the)s 1331 X(mailing)s 1564 X(lists)s 1701 X(and)s 1825 X(can)s 1946 X(con-)s 600 X 4766 Y(tinue)s 777 X(to)s 872 X(interact)s 1117 X(with)s 1278 X(us)s 1379 X(on)s 1487 X(the)s 1611 X(MUD,)s 1825 X(they)s 1982 X(are)s 2256 X 448 Y(constantly)s 2568 X(in)s 2657 X(touch,)s 2859 X(and)s 2992 X(can)s 3122 X(continue)s 3390 X(to)s 3480 X(work)s 3654 X(on)s 2256 X 521 Y(projects)s 2468 X(.)s 2532 X(It)s 2597 X(is)s 2666 X(often)s 2827 X(dif\256cult)s 3063 X(to)s 3139 X(tell)s 3250 X(whether)s 3489 X(a)s 3543 X(person)s 2256 X 594 Y(is)s 2325 X(actually)s 2562 X(in)s 2639 X(the)s 2746 X(building)s 2993 X(\(without)s 3244 X(asking)s 3443 X(them,)s 3619 X(that)s 2256 X 667 Y(is\),)s 2366 X(and)s 2488 X(has)s 2603 X(become)s 2837 X(increasingly)s 3190 X(less)s 3317 X(important)s 3602 X(over)s 2256 X 740 Y(time)s 2398 X(as)s 2476 X(our)s 2586 X(network)s 2826 X(communication)s 3264 X(tools)s 3416 X(improve)s 3638 X(.)s 2256 X 834 Y 2400 X(As)s 2497 X(part)s 2624 X(of)s 2703 X(the)s 2809 X(experiment,)s 3151 X(we)s 3253 X(have)s 3403 X(invited)s 3613 X(sys-)s 2256 X 907 Y(tems)s 2415 X(administrators)s 2830 X(from)s 2990 X(another)s 3221 X(site)s 3346 X(to)s 3429 X(join)s 3564 X(us)s 3654 X(on)s 2256 X 980 Y(our)s 2379 X(MUD)s 2534 X(.)s 2608 X(This)s 2762 X(has)s 2886 X(been)s 3047 X(interesting)s 3365 X(\261)s 3433 X(they)s 3583 X(often)s 2256 X 1053 Y(have)s 2415 X(unique)s 2629 X(viewpoints)s 2955 X(on)s 3054 X(how)s 3200 X(to)s 3284 X(solve)s 3457 X(our)s 3577 X(prob-)s 2256 X 1126 Y(lems)s 2383 X(.)s 2450 X(We)s 2572 X(have)s 2727 X(traded)s 2923 X(information)s 3267 X(about)s 3444 X(tools,)s 3620 X(dis-)s 2256 X 1199 Y(cussed)s 2462 X(collaborative)s 2840 X(projects,)s 3097 X(and)s 3220 X(are)s 3329 X(more)s 3493 X(in)s 3572 X(touch)s 2256 X 1272 Y(with)s 2403 X(what)s 2561 X(is)s 2634 X(happening)s 2939 X(at)s 3016 X(their)s 3167 X(site)s 3261 X(.)s 3328 X(This)s 3476 X(has)s 3594 X(been)s 2256 X 1345 Y(successful)s 2562 X(largely)s 2779 X(because)s 3022 X(we)s 3131 X(had)s 3257 X(already)s 3484 X(had)s 3610 X(pro-)s 2256 X 1418 Y(fessional)s 2518 X(relations)s 2773 X(with)s 2916 X(them)s 3050 X(.)s 3114 X(We)s 3232 X(originally)s 3517 X(thought)s 2256 X 1491 Y(that)s 2387 X(they)s 2532 X(should)s 2739 X(have)s 2895 X(a)s 2955 X(separate)s 3204 X(room)s 3373 X(in)s 3454 X(the)s 3565 X(MUD)s 2256 X 1564 Y(to)s 2342 X(discuss)s 2569 X(their)s 2727 X(own)s 2876 X(problems,)s 3176 X(but)s 3296 X(it)s 3369 X(hasn't)s 3567 X(really)s 2256 X 1637 Y(been)s 2418 X(used)s 2576 X(much)s 2724 X(.)s 2799 X(We)s 2928 X(would)s 3130 X(have)s 3291 X(to)s 3378 X(say)s 3502 X(that)s 3638 X(the)s 2256 X 1710 Y(collaboration)s 2649 X(between)s 2912 X(the)s 3034 X(two)s 3174 X(groups)s 3394 X(has)s 3523 X(been)s 3690 X(a)s 2256 X 1783 Y(success,)s 2506 X(but)s 2623 X(not)s 2740 X(a)s 2802 X(huge)s 2963 X(success)s 3164 X(.)s 3235 X(Perhaps)s 3477 X(the)s 3590 X(most)s 2256 X 1856 Y(interesting)s 2571 X(thing)s 2740 X(to)s 2824 X(come)s 3001 X(out)s 3119 X(of)s 3207 X(it)s 3278 X(is)s 3356 X(that)s 3490 X(they)s 3638 X(are)s 2256 X 1929 Y(building)s 2500 X(their)s 2645 X(own)s 2781 X(MUD)s 2936 X(.)s 2256 X 2023 Y 2400 X(We)s 2522 X(have)s 2677 X(created)s 2900 X(a)s 2959 X(bulletin)s 3193 X(board)s 3373 X(in)s 3454 X(the)s 3565 X(MUD)s 2256 X 2096 Y(that)s 2393 X(has)s 2518 X(the)s 2636 X(list)s 2754 X(of)s 2844 X(current)s 3068 X(systems)s 3315 X(projects)s 3527 X(.)s 3601 X(This)s 2256 X 2169 Y(has)s 2377 X(been)s 2535 X(a)s 2597 X(failure)s 2804 X(because)s 3048 X(it's)s 3166 X(not)s 3283 X(really)s 3468 X(linked)s 3668 X(in)s 2256 X 2242 Y(with)s 2405 X(our)s 2522 X(other)s 2688 X(mechanisms)s 3048 X(for)s 3154 X(project)s 3369 X(organization)s 3703 X(.)s 2256 X 2315 Y(Once)s 2419 X(these)s 2579 X(are)s 2683 X(mechanisms)s 3036 X(are)s 3141 X(more)s 3301 X(clearly)s 3507 X(de\256ned,)s 2256 X 2388 Y(we)s 2359 X(will)s 2489 X(undoubtedly)s 2846 X(build)s 3008 X(a)s 3063 X(MUD)s 3243 X(interface)s 3503 X(in)s 3580 X(order)s 2256 X 2461 Y(to)s 2330 X(see)s 2438 X(whether)s 2675 X(or)s 2752 X(not)s 2859 X(it)s 2919 X(will)s 3046 X(be)s 3131 X(useful)s 3294 X(.)s 2256 X 2588 Y 2852 X f.B 10 Z(Problems)s 2256 X 2697 Y 2400 X f.R 10 Z(While)s 2591 X(the)s 2700 X(MUD)s 2882 X(solves)s 3077 X(many)s 3253 X(problems,)s 3546 X(it)s 3612 X(also)s 2256 X 2770 Y(has)s 2374 X(a)s 2432 X(few)s 2560 X(of)s 2643 X(its)s 2735 X(own)s 2849 X(.)s 2916 X(First,)s 3084 X(as)s 3168 X(mentioned)s 3478 X(above,)s 3682 X(it)s 2256 X 2843 Y(can)s 2375 X(be)s 2464 X(easily)s 2647 X(interrupted)s 2966 X(by)s 3059 X(something)s 3364 X(happening)s 3668 X(in)s 2256 X 2916 Y(real)s 2396 X(life)s 2486 X(.)s 2563 X(This)s 2720 X(is)s 2803 X(something)s 3119 X(that)s 3258 X(one)s 3392 X(simply)s 3612 X(gets)s 2256 X 2989 Y(used)s 2400 X(to)s 2452 X(.)s 2256 X 3083 Y 2400 X(When)s 2587 X(many)s 2763 X(people)s 2969 X(are)s 3080 X(in)s 3161 X(a)s 3220 X(room,)s 3406 X(the)s 3517 X(conver-)s 2256 X 3156 Y(sations)s 2494 X(can)s 2639 X(get)s 2773 X(confused)s 3065 X(and)s 3213 X(intertwined)s 3518 X(.)s 3609 X(One)s 2256 X 3229 Y(quickly)s 2491 X(learns)s 2686 X(to)s 2773 X(pay)s 2904 X(attention)s 3174 X(to)s 3261 X(the)s 3379 X(conversation)s 2256 X 3302 Y(one)s 2377 X(is)s 2446 X(involved)s 2703 X(in,)s 2796 X(and)s 2916 X(to)s 2992 X(partially)s 3240 X(ignore)s 3434 X(the)s 3540 X(others)s 3703 X(.)s 2256 X 3375 Y(The)s 2386 X(use)s 2501 X(of)s 2582 X(recipient)s 2843 X(indications)s 3163 X(\(such)s 3333 X(as)s 3416 X(``R\311my)s 3646 X([to)s 2256 X 3448 Y(Ivan]:)s 2438 X(Where)s 2639 X(are)s 2744 X(you?''\))s 2962 X(solves)s 3152 X(a)s 3205 X(lot)s 3299 X(of)s 3377 X(the)s 3481 X(problem)s 3703 X(.)s 2256 X 3521 Y(This)s 2413 X(is,)s 2513 X(again,)s 2713 X(something)s 3029 X(that)s 3168 X(one)s 3302 X(adapts)s 3511 X(to)s 3602 X(very)s 2256 X 3594 Y(quickly)s 2456 X(.)s 2532 X(On)s 2650 X(the)s 2769 X(other)s 2943 X(hand,)s 3125 X(it)s 3199 X(doesn't)s 3431 X(scale)s 3602 X(very)s 2256 X 3667 Y(well)s 2372 X(.)s 2440 X(We)s 2562 X(considered)s 2880 X(opening)s 3123 X(our)s 3240 X(MUD)s 3424 X(up)s 3520 X(to)s 3602 X(any-)s 2256 X 3740 Y(one)s 2375 X(who)s 2512 X(read)s 2649 X(this)s 2768 X(paper,)s 2955 X(but)s 3062 X(we)s 3162 X(don't)s 3324 X(yet)s 3428 X(understand)s 2256 X 3813 Y(how)s 2398 X(to)s 2478 X(coordinate)s 2789 X(a)s 2848 X(hundred)s 3094 X(people)s 3301 X(talking)s 3516 X(to)s 3597 X(each)s 2256 X 3886 Y(other)s 2393 X(.)s 2256 X 3980 Y 2400 X(The)s 2549 X(MUD)s 2750 X(requires)s 3011 X(a)s 3087 X(bit)s 3204 X(of)s 3305 X(time)s 3471 X(to)s 3569 X(learn)s 3703 X(.)s 2256 X 4053 Y(There)s 2439 X(are)s 2548 X(perhaps)s 2782 X(10)s 2875 X(commands)s 3191 X(that)s 3319 X(everyone)s 3590 X(must)s 2256 X 4126 Y(learn)s 2419 X(immediately)s 2785 X(\(say,)s 2943 X(emote,)s 3154 X(page,)s 3327 X(whisper,)s 3585 X(look,)s 2256 X 4199 Y(and)s 2379 X(so)s 2465 X(on\))s 2553 X(.)s 2619 X(Learning)s 2887 X(to)s 2966 X(administer)s 3275 X(a)s 3331 X(MUD)s 3512 X(is)s 3583 X(more)s 2256 X 4272 Y(dif\256cult)s 2468 X(.)s 2535 X(This)s 2682 X(involves)s 2936 X(making)s 3164 X(sure)s 3304 X(the)s 3415 X(database)s 3675 X(is)s 2256 X 4345 Y(backed)s 2486 X(up,)s 2610 X(creating)s 2867 X(or)s 2963 X(disabling)s 3249 X(guest)s 3431 X(characters,)s 2256 X 4418 Y(and)s 2386 X(learning)s 2640 X(the)s 2757 X(MUD's)s 2995 X(programming)s 3392 X(language)s 3668 X(in)s 2256 X 4491 Y(order)s 2424 X(to)s 2504 X(extend)s 2710 X(the)s 2820 X(environment)s 3157 X(.)s 3224 X(This)s 3370 X(is)s 3442 X(something)s 2256 X 4564 Y(that)s 2386 X(can)s 2508 X(be)s 2600 X(done)s 2758 X(incrementally,)s 3174 X(but)s 3289 X(does)s 3441 X(take)s 3583 X(time)s 3703 X(.)s 2256 X 4637 Y(On)s 2359 X(the)s 2463 X(other)s 2622 X(hand,)s 2790 X(it)s 2850 X(can)s 2965 X(also)s 3095 X(be)s 3180 X(fun)s 3268 X(.)s 600 X 4967 Y f.B 10 Z(1993)s 754 X(LISA)s 931 X(\261)s 986 X(November)s 1305 X(1)s 1338 X(-5,)s 1432 X(1993)s 1586 X(\261)s 1641 X(Monterey,)s 1958 X(CA)s 3687 X(5)s 5280 Y pagebot %%Page: 6 6 pagetop stdencoding /NTimes-Bold /Times-Bold RE /f.B /NTimes-Bold findfont def f.B 10 Z 360 X 215 Y(Collaborative)s 771 X(Networked)s 1108 X(Communication:)s 1612 X(MUDs)s 1819 X(as)s 1900 X(Systems)s 2152 X(Tools)s 3303 X(Evard)s 360 X 448 Y 504 X stdencoding /NTimes-Roman /Times-Roman RE /f.R /NTimes-Roman findfont def f.R 10 Z(Perhaps)s 747 X(the)s 861 X(biggest)s 1086 X(problem)s 1340 X(we've)s 1535 X(discovered)s 360 X 521 Y(is)s 428 X(that)s 552 X(the)s 656 X(MUD)s 833 X(has)s 944 X(the)s 1048 X(potential)s 1305 X(to)s 1379 X(be)s 1464 X(a)s 1516 X(big)s 1623 X(distrac-)s 360 X 594 Y(tion)s 464 X(.)s 540 X(When)s 736 X(it's)s 859 X(constantly)s 1172 X(running)s 1416 X(somewhere)s 1758 X(on)s 360 X 667 Y(your)s 530 X(screen,)s 767 X(it)s 854 X(can)s 996 X(interrupt)s 1274 X(your)s 1443 X(concentration)s 1807 X(.)s 360 X 740 Y(Everyone)s 640 X(learns)s 825 X(to)s 902 X(deal)s 1039 X(with)s 1183 X(this)s 1305 X(differently)s 1587 X(.)s 1651 X(I)s 1698 X(have)s 360 X 813 Y(simply)s 569 X(gotten)s 763 X(used)s 912 X(to)s 991 X(the)s 1100 X(\257ow)s 1245 X(of)s 1327 X(text)s 1454 X(across)s 1647 X(one)s 1769 X(of)s 360 X 886 Y(my)s 483 X(windows,)s 778 X(and)s 913 X(tend)s 1067 X(to)s 1158 X(glance)s 1372 X(at)s 1460 X(it)s 1537 X(every)s 1724 X(few)s 360 X 959 Y(minutes)s 595 X(to)s 670 X(see)s 779 X(what's)s 979 X(happening)s 1256 X(.)s 1317 X(If)s 1383 X(I'm)s 1501 X(busy,)s 1665 X(I)s 1709 X(may)s 360 X 1032 Y(not)s 486 X(look)s 645 X(at)s 735 X(it)s 814 X(for)s 932 X(hours)s 1079 X(.)s 1159 X(If)s 1244 X(something)s 1564 X(important)s 360 X 1105 Y(comes)s 572 X(up,)s 696 X(someone)s 974 X(will)s 1119 X(page)s 1285 X(me)s 1367 X(.)s 1446 X(Several)s 1687 X(other)s 360 X 1178 Y(people)s 564 X(on)s 656 X(the)s 765 X(group)s 946 X(iconify)s 1162 X(the)s 1271 X(window)s 1512 X(or)s 1594 X(bury)s 1742 X(the)s 360 X 1251 Y(buffer)s 572 X(below)s 785 X(another)s 1035 X(one,)s 1198 X(or,)s 1320 X(when)s 1514 X(very)s 1682 X(busy,)s 360 X 1324 Y(disconnect)s 646 X(.)s 709 X(This)s 852 X(is)s 921 X(part)s 1049 X(of)s 1128 X(a)s 1182 X(bigger)s 1377 X(problem)s 1624 X(of)s 1704 X(time)s 360 X 1397 Y(management,)s 753 X(and)s 883 X(is)s 962 X(related)s 1178 X(to)s 1263 X(similar)s 1483 X(interruptions)s 360 X 1470 Y(caused)s 585 X(by)s 695 X(telephones,)s 1042 X(electronic)s 1351 X(mail,)s 1532 X(and)s 1672 X(of\256ce)s 360 X 1543 Y(visitors)s 557 X(.)s 632 X(We)s 761 X(have)s 923 X(not)s 1044 X(found)s 1234 X(the)s 1352 X(MUD)s 1543 X(to)s 1630 X(be)s 1728 X(any)s 360 X 1616 Y(worse)s 541 X(than)s 678 X(the)s 782 X(other)s 941 X(distractions)s 1250 X(.)s 360 X 1743 Y 899 X f.B 10 Z(Future)s 1118 X(Work)s 360 X 1852 Y 504 X f.R 10 Z(We)s 623 X(plan)s 764 X(on)s 856 X(several)s 1073 X(possible)s 1319 X(avenues)s 1561 X(for)s 1665 X(future)s 360 X 1925 Y(growth)s 548 X(.)s 617 X(One)s 758 X(project)s 974 X(that)s 1105 X(is)s 1180 X(currently)s 1451 X(underway)s 1742 X(are)s 360 X 1998 Y(objects)s 575 X(that)s 701 X(represent)s 972 X(entities)s 1193 X(on)s 1285 X(the)s 1393 X(network)s 1611 X(.)s 1676 X(We'd)s 360 X 2071 Y(like)s 498 X(a)s 565 X(printer)s 780 X(in)s 869 X(the)s 988 X(MUD)s 1180 X(that)s 1318 X(always)s 1540 X(shows)s 1742 X(the)s 360 X 2144 Y(various)s 587 X(printer)s 797 X(queues)s 1014 X(on)s 1112 X(the)s 1226 X(network,)s 1493 X(and)s 1621 X(has)s 1742 X(the)s 360 X 2217 Y(ability)s 568 X(to)s 656 X(restart)s 859 X(printer)s 1072 X(daemons)s 1344 X(\(with)s 1520 X(appropriate)s 360 X 2290 Y(security)s 617 X(features)s 874 X(built)s 1043 X(in\))s 1117 X(.)s 1202 X(We're)s 1415 X(working)s 1682 X(on)s 1794 X(a)s 360 X 2363 Y(themely)s 601 X(representation)s 1005 X(for)s 1107 X(computers)s 1410 X(that)s 1536 X(will)s 1665 X(notify)s 360 X 2436 Y(us)s 441 X(when)s 607 X(they're)s 818 X(unreachable)s 1141 X(.)s 1202 X(Perhaps:)s 360 X 2538 Y 408 X stdencoding /NCourier /Courier RE /f.CW /NCourier findfont def f.CW 10 Z(A)s 488 X(worried)s 768 X(-looking)s 1128 X(squirrel)s 1488 X(scampers)s 360 X 2611 Y 408 X(in)s 528 X(through)s 848 X(the)s 1008 X(window)s 1288 X(and)s 1448 X(says,)s 360 X 2684 Y 408 X("denali)s 728 X(is)s 848 X(unreachable)s 1328 X(at)s 1448 X(3:45)s 1648 X(pm")s 360 X 2786 Y 360 X f.R 10 Z(.)s 377 X(.)s 394 X(.)s 433 X(then)s 570 X(again,)s 754 X(perhaps)s 983 X(not)s 1068 X(.)s 360 X 2880 Y 504 X(Current)s 763 X(research)s 1042 X(at)s 1147 X(Xerox)s 1369 X(PARC)s 1598 X(involves)s 360 X 2953 Y(integrating)s 674 X(MUDs)s 879 X(with)s 1022 X(audio,)s 1210 X(video,)s 1398 X(and)s 1517 X(shared)s 1714 X(pro-)s 360 X 3026 Y(grams)s 545 X([Curt93])s 773 X(.)s 834 X(The)s 960 X(MUD)s 1138 X(then)s 1276 X(becomes)s 1533 X(the)s 1638 X(perfect)s 360 X 3099 Y(sequencer)s 667 X(for)s 783 X(these)s 960 X(devices)s 1200 X(because)s 1451 X(of)s 1545 X(its)s 1648 X(spatial)s 360 X 3172 Y(metaphor:)s 662 X(one)s 789 X(could)s 968 X(actually)s 1212 X(talk)s 1345 X(with)s 1496 X(and)s 1624 X(see)s 1742 X(the)s 360 X 3245 Y(people)s 569 X(who)s 714 X(are)s 826 X(in)s 908 X(the)s 1020 X(same)s 1188 X(room)s 1358 X(on)s 1454 X(the)s 1566 X(MUD,)s 1768 X(as)s 360 X 3318 Y(opposed)s 607 X(to)s 685 X(hearing)s 911 X(everything)s 1222 X(that)s 1349 X(is)s 1420 X(said)s 1555 X(on)s 1648 X(a)s 1705 X(sim-)s 360 X 3391 Y(ple)s 477 X(shared)s 686 X(audio)s 869 X(channel)s 1112 X(\(which)s 1332 X(is)s 1411 X(what)s 1575 X(primarily)s 360 X 3464 Y(happens)s 603 X(with)s 748 X(today's)s 970 X(multicast)s 1243 X(backbone)s 1524 X(interfaces\))s 1807 X(.)s 360 X 3537 Y(One)s 500 X(could)s 677 X(look)s 824 X(at)s 902 X(a)s 961 X(white)s 1110 X(-board)s 1311 X(on)s 1405 X(the)s 1515 X(wall)s 1659 X(of)s 1742 X(the)s 360 X 3610 Y(cabin)s 530 X(and)s 651 X(it)s 714 X(have)s 865 X(it)s 928 X(pop)s 1052 X(up)s 1143 X(as)s 1224 X(an)s 1313 X(X)s 1387 X(Windows)s 1668 X(appli-)s 360 X 3683 Y(cation)s 569 X(on)s 680 X(the)s 807 X(screen)s 978 X(.)s 1061 X(The)s 1209 X(application)s 1551 X(would)s 1761 X(be)s 360 X 3756 Y(shared)s 561 X(by)s 654 X(anyone)s 873 X(looking)s 1103 X(at)s 1179 X(the)s 1289 X(board,)s 1485 X(and)s 1609 X(changes)s 360 X 3829 Y(could)s 543 X(be)s 641 X(made)s 821 X(and)s 952 X(seen)s 1105 X(by)s 1205 X(everyone)s 1449 X(.)s 1522 X(We)s 1649 X(expect)s 360 X 3902 Y(these)s 535 X(tools)s 702 X(to)s 792 X(be)s 893 X(enormously)s 1245 X(useful,)s 1463 X(but)s 1586 X(are)s 1706 X(con-)s 360 X 3975 Y(cerned)s 561 X(that)s 685 X(the)s 790 X(audio)s 961 X(and)s 1080 X(video)s 1251 X(may)s 1389 X(not)s 1497 X(be)s 1583 X(as)s 1661 X(useful)s 360 X 4048 Y(as)s 443 X(one)s 567 X(might)s 751 X(think,)s 933 X(given)s 1109 X(the)s 1219 X(interruptive)s 1559 X(capability)s 360 X 4121 Y(they)s 497 X(have,)s 662 X(and)s 780 X(the)s 884 X(lack)s 1018 X(of)s 1095 X(a)s 1147 X(history)s 1354 X(mechanism)s 1659 X(.)s 360 X 4215 Y 504 X(As)s 620 X(other)s 799 X(people)s 1019 X(on)s 1127 X(other)s 1307 X(MOOs)s 1531 X(write)s 1712 X(neat)s 360 X 4288 Y(applications,)s 750 X(we)s 877 X(will)s 1030 X(be)s 1141 X(porting)s 1381 X(those)s 1570 X(onto)s 1736 X(our)s 360 X 4361 Y(MUD)s 515 X(.)s 582 X(Shared)s 795 X(World)s 993 X(Wide)s 1166 X(Web)s 1321 X(readers)s 1543 X(are)s 1654 X(likely,)s 360 X 4434 Y(as)s 438 X(are)s 542 X(other)s 701 X(interfaces)s 984 X(to)s 1058 X(the)s 1162 X(Internet's)s 1440 X(resources)s 1692 X(.)s 360 X 4528 Y 504 X(We)s 632 X(are)s 749 X(working)s 1005 X(on)s 1106 X(a)s 1171 X(way)s 1317 X(to)s 1404 X(access)s 1612 X(systems)s 360 X 4601 Y(administration)s 773 X(information)s 1114 X(from)s 1269 X(within)s 1466 X(the)s 1574 X(MUD,)s 1772 X(in)s 360 X 4674 Y(order)s 548 X(to)s 649 X(make)s 843 X(it)s 930 X(even)s 1105 X(more)s 1291 X(of)s 1395 X(a)s 1474 X(collaborative)s 2016 X 448 Y(environment)s 2380 X(where)s 2570 X(administrators)s 2980 X(can)s 3100 X(meet)s 3258 X(and)s 3380 X(dis-)s 2016 X 521 Y(cuss)s 2153 X(problems)s 2401 X(.)s 2016 X 615 Y 2160 X(Because)s 2415 X(of)s 2502 X(the)s 2617 X(value)s 2795 X(of)s 2883 X(the)s 2998 X(MUD)s 3186 X(as)s 3275 X(a)s 3338 X(place)s 2016 X 688 Y(for)s 2127 X(virtual)s 2335 X(meetings,)s 2627 X(we)s 2738 X(have)s 2897 X(created)s 3124 X(a)s 3187 X(conference)s 2016 X 761 Y(room)s 2184 X(that)s 2313 X(we)s 2419 X(will)s 2552 X(be)s 2643 X(sharing)s 2867 X(with)s 3014 X(faculty)s 3229 X(and)s 3354 X(vari-)s 2016 X 834 Y(ous)s 2141 X(groups)s 2354 X(within)s 2557 X(the)s 2671 X(University)s 2953 X(.)s 3024 X(We)s 3149 X(had)s 3277 X(thought)s 2016 X 907 Y(of)s 2101 X(allowing)s 2365 X(students)s 2614 X(on)s 2710 X(the)s 2823 X(MUD)s 3009 X(in)s 3092 X(order)s 3263 X(to)s 3346 X(learn)s 2016 X 980 Y(some)s 2195 X(aspects)s 2427 X(of)s 2520 X(object)s 2722 X(oriented)s 2979 X(programming,)s 3395 X(but)s 2016 X 1053 Y(we)s 2131 X(value)s 2313 X(our)s 2438 X(peace)s 2628 X(and)s 2761 X(quiet)s 2932 X(and)s 3065 X(will)s 3207 X(be)s 3308 X(letting)s 2016 X 1126 Y(them)s 2175 X(run)s 2288 X(their)s 2436 X(own)s 2575 X(MUD,)s 2772 X(where)s 2960 X(they)s 3100 X(won't)s 3280 X(be)s 3368 X(able)s 2016 X 1199 Y(to)s 2090 X(\256nd)s 2215 X(us)s 2274 X(.)s 2016 X 1326 Y 2588 X f.B 10 Z(Conclusion)s 2016 X 1435 Y 2160 X f.R 10 Z(Our)s 2300 X(MUD)s 2492 X(has)s 2618 X(been)s 2781 X(a)s 2849 X(successful)s 3162 X(experiment,)s 2016 X 1508 Y(and)s 2143 X(we)s 2252 X(plan)s 2397 X(on)s 2493 X(continuing)s 2808 X(to)s 2890 X(use)s 3009 X(it)s 3047 X(.)s 3116 X(It)s 3187 X(has)s 3306 X(solved)s 2016 X 1581 Y(the)s 2127 X(communications)s 2598 X(problems)s 2875 X(we)s 2982 X(had,)s 3125 X(and)s 3251 X(has)s 3370 X(pro-)s 2016 X 1654 Y(vided)s 2198 X(some)s 2373 X(unexpected)s 2711 X(bene\256ts)s 2919 X(.)s 2992 X(Among)s 3224 X(those)s 3398 X(are)s 2016 X 1727 Y(the)s 2123 X(creation)s 2364 X(of)s 2444 X(communication)s 2886 X(channels)s 3146 X(that)s 3273 X(had)s 3395 X(not)s 2016 X 1800 Y(previous)s 2270 X(existed,)s 2502 X(and)s 2623 X(the)s 2730 X(ability)s 2927 X(to)s 3003 X(work)s 3163 X(more)s 3324 X(effec-)s 2016 X 1873 Y(tively)s 2200 X(from)s 2360 X(remote)s 2577 X(locations)s 2819 X(.)s 2889 X(We)s 3013 X(recommend)s 3359 X(it)s 3428 X(to)s 2016 X 1946 Y(other)s 2227 X(systems)s 2513 X(administration)s 2974 X(groups)s 3228 X(and)s 3398 X(are)s 2016 X 2019 Y(interested)s 2299 X(in)s 2373 X(hearing)s 2595 X(about)s 2765 X(their)s 2910 X(experiences)s 3226 X(.)s 2016 X 2146 Y 2581 X f.B 10 Z(Availability)s 2016 X 2255 Y 2060 X f.R 10 Z(The)s 2189 X(MOO)s 2370 X(server)s 2559 X(is)s 2630 X(available)s 2899 X(on)s 2991 X(parcftp)s 3180 X(.xerox)s 3348 X(.com)s 2016 X 2328 Y(in)s 2125 X f.CW 10 Z(/pub/MOO)s 2445 X f.R 10 Z(.)s 2541 X(Get)s 2695 X(the)s 2834 X(latest)s 3034 X(version)s 3287 X(of)s 3398 X(the)s 2016 X 2401 Y(LambdaMOO)s 2423 X(code)s 2549 X(.)s 2622 X(It)s 2697 X(runs)s 2845 X(on)s 2945 X(nearly)s 3146 X(any)s 3276 X(type)s 3425 X(of)s 2016 X 2474 Y(UNIX)s 2212 X(platform)s 2442 X(.)s 2510 X(Clients,)s 2746 X(other)s 2912 X(MOO)s 3096 X(code)s 3251 X(\(such)s 3424 X(as)s 2016 X 2547 Y(the)s 2120 X(Gopher)s 2341 X(slates\),)s 2553 X(and)s 2672 X(related)s 2878 X(papers)s 3075 X(are)s 3180 X(also)s 3311 X(at)s 3383 X(this)s 2016 X 2620 Y(site)s 2110 X(.)s 2016 X 2714 Y 2160 X(LP,)s 2302 X(another)s 2549 X(type)s 2711 X(of)s 2813 X(MUD,)s 3032 X(is)s 3124 X(available)s 3414 X(on)s 2016 X 2787 Y(ftp)s 2090 X(.ccs)s 2193 X(.neu)s 2306 X(.edu)s 2475 X(in)s 2583 X f.CW 10 Z(/pub/mud/driver)s 3183 X(s/lpmud)s 3463 X f.R 10 Z(.)s 2016 X 2860 Y(Database)s 2369 X(libraries)s 2697 X(are)s 2887 X(available)s 3238 X(in)s 3398 X(the)s 2016 X 2933 Y f.CW 10 Z(/pub/mud/mudli)s 2576 X(bs)s 2742 X f.R 10 Z(directory)s 2983 X(.)s 3108 X(Clients)s 3384 X(and)s 2016 X 3006 Y(papers)s 2212 X(are)s 2316 X(also)s 2446 X(on)s 2534 X(this)s 2653 X(ftp)s 2749 X(server)s 2912 X(.)s 2016 X 3133 Y 2471 X f.B 10 Z(Acknowledgemen)s 2976 X(ts)s 2016 X 3242 Y 2160 X f.R 10 Z(Thanks)s 2395 X(to)s 2486 X(Robert)s 2706 X(Leslie)s 2910 X(for)s 3027 X(bringing)s 3292 X(up)s 3398 X(the)s 2016 X 3315 Y(\256rst)s 2160 X(systems)s 2412 X(MUD;)s 2626 X(Erik)s 2781 X(Ostrom,)s 3038 X(Larry)s 3225 X(Masinter,)s 2016 X 3388 Y(Jay)s 2132 X(Carlson,)s 2383 X(and)s 2507 X(Michele)s 2755 X(Evard)s 2942 X(for)s 3047 X(writing)s 3268 X(a)s 3326 X(lot)s 3425 X(of)s 2016 X 3461 Y(the)s 2126 X(code)s 2280 X(which)s 2471 X(was)s 2602 X(ported)s 2799 X(to)s 2878 X(the)s 2987 X(InfoPark;)s 3265 X(Stephen)s 2016 X 3534 Y(White)s 2232 X(and)s 2380 X(Pavel)s 2581 X(Curtis)s 2796 X(for)s 2925 X(writing)s 3171 X(MOO;)s 3398 X(the)s 2016 X 3607 Y(Argonne)s 2271 X(National)s 2524 X(Laboratory)s 2842 X(Mathematics)s 3211 X(and)s 3329 X(Com-)s 2016 X 3680 Y(puter)s 2176 X(Science)s 2408 X(Support)s 2641 X(Staff)s 2795 X(for)s 2896 X(participating;)s 3278 X(and)s 3398 X(the)s 2016 X 3753 Y(whole)s 2221 X(InfoPark)s 2495 X(crew)s 2667 X(for)s 2785 X(\(on)s 2873 X(-line)s 3037 X(and)s 3174 X(interactive\))s 2016 X 3826 Y(comments)s 2313 X(on)s 2401 X(this)s 2520 X(paper)s 2668 X(.)s 2016 X 3953 Y 2459 X f.B 10 Z(Author)s 2688 X(Information)s 2016 X 4062 Y 2160 X f.R 10 Z(R\311my)s 2349 X(Evard)s 2538 X(is)s 2613 X(the)s 2725 X(leader)s 2920 X(of)s 3006 X(the)s 3119 X(Experimental)s 2016 X 4135 Y(Systems)s 2268 X(Group)s 2465 X(of)s 2548 X(the)s 2658 X(College)s 2894 X(of)s 2977 X(Computer)s 3271 X(Science)s 2016 X 4208 Y(at)s 2132 X(Northeastern)s 2545 X(University)s 2827 X(.)s 2934 X(He)s 3080 X(has)s 3237 X(been)s 3431 X(at)s 2016 X 4281 Y(Northeastern)s 2412 X(for)s 2540 X(a)s 2621 X(busy)s 2797 X(year,)s 2980 X(during)s 3204 X(which)s 3417 X(he)s 2016 X 4354 Y(changed)s 2275 X(nearly)s 2479 X(everything)s 2801 X(about)s 2987 X(the)s 3107 X(network)s 3325 X(.)s 3402 X(He)s 2016 X 4427 Y(received)s 2285 X(his)s 2405 X(M)s 2464 X(.S)s 2518 X(.)s 2577 X(in)s 2671 X(Computer)s 2978 X(Science)s 3228 X(from)s 3398 X(the)s 2016 X 4500 Y(University)s 2332 X(of)s 2421 X(Oregon)s 2654 X(in)s 2740 X(1992,)s 2923 X(and)s 3053 X(graduated)s 3351 X(from)s 2016 X 4573 Y(Andrews)s 2283 X(University)s 2591 X(with)s 2736 X(a)s 2792 X(B)s 2836 X(.S)s 2890 X(.)s 2933 X(in)s 3011 X(Mathematics)s 3384 X(and)s 2016 X 4646 Y(Computer)s 2328 X(Science)s 2583 X(in)s 2681 X(1990)s 2813 X(.)s 2898 X(He)s 3022 X(has)s 3157 X(been)s 3329 X(doing)s 2016 X 4719 Y(UNIX)s 2210 X(systems)s 2449 X(administration)s 2863 X(for)s 2967 X(\256ve)s 3094 X(years,)s 3279 X(but)s 3391 X(has)s 360 X 4967 Y f.B 10 Z(6)s 2026 X(1993)s 2180 X(LISA)s 2357 X(\261)s 2412 X(November)s 2731 X(1)s 2764 X(-5,)s 2858 X(1993)s 3012 X(\261)s 3067 X(Monterey,)s 3384 X(CA)s 5280 Y pagebot %%Page: 7 7 pagetop stdencoding /NTimes-Bold /Times-Bold RE /f.B /NTimes-Bold findfont def f.B 10 Z 600 X 215 Y(Evard)s 1773 X(Collaborative)s 2184 X(Networked)s 2521 X(Communication:)s 3025 X(MUDs)s 3232 X(as)s 3313 X(Systems)s 3565 X(Tools)s 600 X 448 Y stdencoding /NTimes-Roman /Times-Roman RE /f.R /NTimes-Roman findfont def f.R 10 Z(only)s 751 X(been)s 910 X(MUDding)s 1216 X(for)s 1326 X(nine)s 1474 X(months)s 1670 X(.)s 1742 X(He)s 1853 X(may)s 2001 X(be)s 600 X 521 Y(reached)s 836 X(as)s 920 X("remy@ccs)s 1231 X(.neu)s 1344 X(.edu",)s 1529 X(or)s 1612 X(as)s 1696 X("r'm")s 1874 X(on)s 1968 X(any)s 600 X 594 Y(of)s 677 X(several)s 889 X(MUDs)s 1070 X(.)s 600 X 2956 Y 3120 0 l D 982 X 2968 Y 982 X save gsave currentpoint 1641 sub translate 2356 1641 scale %% %!PS-Adobe-2.0 EPSF-2.0 %% %%Title: /tmp/xfig-fig006694 %% %%Creator: fig2dev %% %%CreationDate: Mon Sep 13 21:04:51 1993 %% %%For: remy@vesuvius.ccs.neu.edu (Remy Evard) %% %%BoundingBox: 0 0 378 283 1 378 div 1 263 div scale %% %%Pages: 0 %% %%EndComments /$F2psDict 200 dict def $F2psDict begin $F2psDict /mtrx matrix put /l {lineto} bind def /m {moveto} bind def /s {stroke} bind def /n {newpath} bind def /gs {gsave} bind def /gr {grestore} bind def /clp {closepath} bind def /graycol {dup dup currentrgbcolor 4 -2 roll mul 4 -2 roll mul 4 -2 roll mul setrgbcolor} bind def /col-1 {} def /col0 {0 0 0 setrgbcolor} bind def /col1 {0 0 1 setrgbcolor} bind def /col2 {0 1 0 setrgbcolor} bind def /col3 {0 1 1 setrgbcolor} bind def /col4 {1 0 0 setrgbcolor} bind def /col5 {1 0 1 setrgbcolor} bind def /col6 {1 1 0 setrgbcolor} bind def /col7 {1 1 1 setrgbcolor} bind def /DrawEllipse { /endangle exch def /startangle exch def /yrad exch def /xrad exch def /y exch def /x exch def /savematrix mtrx currentmatrix def x y translate xrad yrad scale 0 0 1 startangle endangle arc savematrix setmatrix } def end /$F2psBegin {$F2psDict begin /$F2psEnteredState save def} def /$F2psEnd {$F2psEnteredState restore end} def %% %%EndProlog $F2psBegin 0 setlinecap 0 setlinejoin -5.0 288.0 translate 0.900 -0.900 scale 0.500 setlinewidth %% % Ellipse n 145 150 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 145 170 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 145 190 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 145 210 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 145 230 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 145 250 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 145 290 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 185 230 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 185 210 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 185 190 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 185 150 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 185 130 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 185 110 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 185 90 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 185 170 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 225 90 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 225 110 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 225 230 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 265 90 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 265 110 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 265 190 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 265 230 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 303 90 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 303 110 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 303 190 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 303 210 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 303 230 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 303 290 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 345 310 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 345 230 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 385 230 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 385 210 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 145 130 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 303 310 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 145 310 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 303 171 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr %% % Ellipse n 226 190 2 2 0 360 DrawEllipse gs 0.00 setgray fill gr gs col-1 s gr 1.000 setlinewidth n 100 5 m 100 5 l gs col-1 s gr %% % Polyline n 105 30 m 105 320 l gs col-1 s gr %% % Polyline n 5 30 m 5 320 l 425 320 l 425 30 l gs col-1 s gr %% % Polyline n 5 75 m 425 75 l gs col-1 s gr %% % Polyline n 5 30 m 425 30 l gs 0.00 setgray fill gr gs col-1 s gr /Times-Roman findfont 12.00 scalefont setfont 20 315 m gs 1 -1 scale (communicators) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 295 m gs 1 -1 scale (walkie-talkies) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 275 m gs 1 -1 scale (pagers) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 255 m gs 1 -1 scale (telephones) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 235 m gs 1 -1 scale (MUDs) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 215 m gs 1 -1 scale (Zephyr) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 195 m gs 1 -1 scale (IRC) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 175 m gs 1 -1 scale (talk) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 155 m gs 1 -1 scale (msend) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 135 m gs 1 -1 scale (write) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 115 m gs 1 -1 scale (News) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 20 95 m gs 1 -1 scale (Electronic Mail) col-1 show gr %% % /Times-Bold findfont 15.00 scalefont setfont %% % 15 25 m %% % gs 1 -1 scale (Figure 1 : Communications Tools - Criteria and Opinions) col-1 show gr /Times-Bold findfont 15.00 scalefont setfont 262 215 m gs 1 -1 scale (?) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 356 45 m gs 1 -1 scale (Extensible) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 121 45 m gs 1 -1 scale (Real Time) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 201 45 m gs 1 -1 scale (Archivable) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 276 45 m gs 1 -1 scale (Multiuser) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 171 65 m gs 1 -1 scale (Online) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 316 65 m gs 1 -1 scale (Exclusive) col-1 show gr /Times-Roman findfont 12.00 scalefont setfont 229 65 m gs 1 -1 scale (Unobtrusive) col-1 show gr /Times-Bold findfont 15.00 scalefont setfont 342 195 m gs 1 -1 scale (?) col-1 show gr /Times-Bold findfont 15.00 scalefont setfont 223 215 m gs 1 -1 scale (?) col-1 show gr $F2psEnd grestore restore f.R 10 Z 600 X 4685 Y 1358 X f.B 10 Z(Figure)s 1570 X(1)s f.R 10 Z(:)s 1666 X(Communications)s 2144 X(Tools)s 2318 X(\261)s 2373 X(Criteria)s 2600 X(and)s 2718 X(Opinions)s 600 X 721 Y 1145 X f.B 10 Z(Bibliography)s 600 X 830 Y f.R 10 Z([Bart90])s 849 X(R)s 893 X(.)s 934 X(Bartle,)s 1139 X("Interactive)s 1477 X(Multi)s 1626 X(-User)s 1798 X(Computer)s 600 X 903 Y 744 X(Games",)s 996 X(December)s 1293 X(1990)s 1425 X(.)s 600 X 976 Y 744 X(ftp://ftp)s 949 X(.ccs)s 1052 X(.neu)s 1165 X(.edu//pub/mud/d)s 1604 X(ocs/papers/)s 600 X 1049 Y 744 X(mudreport)s 1021 X(.ps)s 1097 X(.gz)s 600 X 1129 Y([Curt92a])s 905 X(P)s 942 X(.)s 1006 X(Curtis,)s 1234 X("LambdaMOO)s 1683 X(Programmer's)s 600 X 1202 Y 744 X(Manual",)s 1014 X(August)s 1228 X(1993)s 1360 X(.)s 600 X 1275 Y 744 X(ftp://parcftp)s 1064 X(.xerox)s 1232 X(.com//pub/MOO/)s 600 X 1348 Y 744 X(ProgrammersMan)s 1225 X(ual)s 1307 X(.ps)s 600 X 1428 Y([Curt92b])s 885 X(P)s 922 X(.)s 964 X(Curtis,)s 1169 X("Mudding:)s 1483 X(Social)s 1676 X(Phenomena)s 2012 X(in)s 600 X 1501 Y 744 X(Text)s 867 X(-Based)s 1087 X(Virtual)s 1311 X(Realities",)s 1625 X(in)s 1711 X(the)s 1827 X(Proceed-)s 600 X 1574 Y 744 X(ings)s 884 X(of)s 968 X(the)s 1079 X(1992)s 1240 X(Conference)s 1577 X(on)s 1673 X(the)s 1785 X(Directions)s 600 X 1647 Y 744 X(and)s 902 X(Implications)s 1299 X(of)s 1416 X(Advanced)s 1748 X(Computing,)s 600 X 1720 Y 744 X(Berkeley,)s 1024 X(May)s 1168 X(1992)s 1300 X(.)s 600 X 1793 Y 744 X(ftp://parcftp)s 1064 X(.xerox)s 1232 X(.com//pub/MOO/p)s 1727 X(apers/)s 600 X 1866 Y 744 X(DIAC92)s 972 X(.ps)s 600 X 1946 Y([Curt93])s 867 X(P)s 904 X(.)s 960 X(Curtis)s 1162 X(and)s 1297 X(D)s 1345 X(.)s 1401 X(Nichols,)s 1665 X("MUDs)s 1913 X(Grow)s 600 X 2019 Y 744 X(Up:)s 873 X(Social)s 1069 X(Virtual)s 1287 X(Reality)s 1509 X(in)s 1589 X(the)s 1699 X(Real)s 1850 X(World",)s 600 X 2092 Y 744 X(unpublished)s 1091 X(report,)s 1289 X(May)s 1433 X(5,)s 1505 X(1993)s 1637 X(.)s 600 X 2165 Y 744 X(ftp://parcftp)s 1064 X(.xerox)s 1232 X(.com//pub/MOO/p)s 1727 X(apers/)s 600 X 2238 Y 744 X(MUDsGrowUp)s 1157 X(.ps)s 600 X 2318 Y([Eich88])s 879 X(M)s 938 X(.)s 1001 X(Eichin,)s 1239 X(R)s 1283 X(.)s 1346 X(French,)s 1594 X(D)s 1642 X(.)s 1705 X(Jedlinsky,)s 2021 X(J)s 2047 X(.)s 600 X 2391 Y 744 X(Kohl,)s 999 X(W)s 1062 X(.)s 1184 X(Sommerfeld,)s 1636 X("The)s 1872 X(Zephyr)s 600 X 2464 Y 744 X(Noti\256cation)s 1108 X(Server",)s 1370 X(in)s 1467 X(Winter)s 1698 X(1988)s 1875 X(Usenix)s 600 X 2537 Y 744 X(Proceedings)s 1070 X(.)s 600 X 2610 Y 744 X(ftp://athena)s 1050 X(-dist)s 1169 X(.mit)s 1276 X(.edu//pub/zephy)s 1704 X(r/doc/)s 600 X 2683 Y 744 X(usenix)s 918 X(.ps)s 600 X 2763 Y([Masi93])s 871 X(L)s 912 X(.)s 956 X(Masinter)s 1221 X(and)s 1344 X(E)s 1385 X(.)s 1429 X(Ostrom,)s 1673 X("Collaborative)s 600 X 2836 Y 744 X(Information)s 1090 X(Retrieval:)s 1404 X(Gopher)s 1630 X(from)s 1786 X(MOO",)s 2012 X(in)s 600 X 2909 Y 744 X(The)s 870 X(Proceedings)s 1218 X(of)s 1295 X(INET)s 1469 X('93,)s 1596 X(June)s 1740 X(1993)s 1872 X(.)s 2256 X 448 Y 2400 X(ftp://parcftp)s 2720 X(.xerox)s 2888 X(.com//pub/MOO/p)s 3383 X(apers/)s 2256 X 521 Y 2400 X(MOOGopher)s 2754 X(.ps)s 2256 X 601 Y([Vers91])s 2528 X(B)s 2572 X(.)s 2625 X(Verser,)s 2856 X("Network)s 3152 X(utilization)s 3462 X(by)s 3565 X(MUD)s 2256 X 674 Y 2400 X(players)s 2625 X(\(was)s 2782 X(Re:)s 2906 X(Gaming\),")s 3218 X(in)s 3301 X(Computers)s 3624 X(and)s 2256 X 747 Y 2400 X(Academic)s 2707 X(Freedom)s 2980 X(Newsletter,)s 3324 X(v)s 3357 X(.1)s 3443 X(n)s 3476 X(.43,)s 3612 X(Dec)s 2256 X 820 Y 2400 X(15,)s 2505 X(1991)s 2637 X(.)s 2256 X 893 Y 2400 X(gopher://gophe)s 2803 X(r)s 2825 X(.eff)s 2916 X(.org/1/academic)s 3346 X(/news/)s 2256 X 966 Y 2400 X(cafv01n43)s 2256 X 1093 Y f.B 10 Z(Appendix)s 2581 X(\261)s 2661 X(A)s 2757 X(Comparison)s 3157 X(of)s 3260 X(Communication)s 2256 X 1166 Y 2400 X(Tools)s 2256 X 1275 Y 2400 X f.R 10 Z(Before)s 2625 X(the)s 2751 X(systems)s 3007 X(group)s 3206 X(decided)s 3459 X(to)s 3556 X(use)s 3690 X(a)s 2256 X 1348 Y(MUD,)s 2467 X(we)s 2584 X(considered)s 2912 X(several)s 3141 X(other)s 3317 X(tools)s 3485 X(that)s 3624 X(had)s 2256 X 1421 Y(various)s 2484 X(features)s 2696 X(.)s 2767 X(We)s 2892 X(present)s 3117 X(them,)s 3300 X(along)s 3480 X(with)s 3632 X(our)s 2256 X 1494 Y(own)s 2397 X(opinions,)s 2670 X(in)s 2749 X(the)s 2857 X(hopes)s 3038 X(that)s 3165 X(they)s 3306 X(will)s 3437 X(clarify)s 3638 X(the)s 2256 X 1567 Y(differences)s 2655 X(between)s 2980 X(various)s 3278 X(communications)s 2256 X 1640 Y(methods)s 2482 X(.)s 2544 X(A)s 2614 X(chart)s 2770 X(presenting)s 3070 X(our)s 3180 X(opinions)s 3431 X(is)s 3498 X(given)s 3668 X(in)s 2256 X 1713 Y(Figure)s 2460 X(1)s 2493 X(.)s 2562 X(This)s 2711 X(is)s 2786 X(not)s 2902 X(intended)s 3163 X(to)s 3246 X(be)s 3340 X(an)s 3434 X(exhaustive)s 2256 X 1786 Y(summary,)s 2545 X(but)s 2653 X(more)s 2813 X(of)s 2891 X(an)s 2977 X(overview)s 3248 X(of)s 3326 X(different)s 3579 X(types)s 2256 X 1859 Y(of)s 2333 X(communication)s 2771 X(tools)s 2901 X(.)s 2256 X 1950 Y f.B 10 Z(Asynchronous)s 2685 X(on)s 2755 X(-line)s 2904 X(communication)s 3368 X(tools)s 2256 X 2041 Y 2319 X f.Y 10 Z(\017)s 2390 X f.R 10 Z(Electronic)s 2691 X(mail)s 2836 X(is)s 2906 X(used)s 3053 X(to)s 3130 X(send)s 3277 X(a)s 3332 X(document)s 3620 X(to)s 2256 X 2114 Y 2390 X(any)s 2516 X(number)s 2749 X(of)s 2834 X(recipients)s 3095 X(.)s 3164 X(It)s 3234 X(is,)s 3325 X(for)s 3431 X(the)s 3542 X(most)s 2256 X 2187 Y 2390 X(part,)s 2536 X(reliable,)s 2780 X(and)s 2902 X(is)s 2973 X(used)s 3121 X(so)s 3206 X(constantly)s 3507 X(that)s 3634 X(it)s 2256 X 2260 Y 2390 X(has)s 2503 X(become)s 2735 X(convenient)s 3052 X(through)s 3282 X(force)s 3443 X(of)s 3521 X(habit,)s 2256 X 2333 Y 2390 X(if)s 2453 X(nothing)s 2678 X(else)s 2783 X(.)s 2844 X(It)s 2907 X(can)s 3022 X(either)s 3197 X(be)s 3282 X(interruptive)s 3617 X(or)s 2256 X 2406 Y 2390 X(not,)s 2531 X(depending)s 2847 X(on)s 2951 X(the)s 3071 X(receiver's)s 3373 X(preference)s 3655 X(.)s 2256 X 2479 Y 2390 X(While)s 2580 X(email)s 2756 X(communication)s 3198 X(can)s 3317 X(be)s 3406 X(so)s 3492 X(fast)s 3616 X(as)s 2256 X 2552 Y 2390 X(to)s 2479 X(be)s 2579 X(nearly)s 2782 X(real)s 2883 X(-time,)s 3078 X(it)s 3152 X(does)s 3310 X(not)s 3431 X(normally)s 2256 X 2625 Y 2390 X(convey)s 2609 X(the)s 2718 X(feeling)s 2932 X(of)s 3015 X(a)s 3073 X(real)s 3174 X(-life)s 3314 X(conversation)s 3655 X(.)s 2256 X 2698 Y 2390 X(It)s 2459 X(is)s 2532 X(possible)s 2779 X(to)s 2859 X(keep)s 3013 X(a)s 3071 X(history)s 3283 X(of)s 3365 X(email)s 3542 X(mes-)s 2256 X 2771 Y 2390 X(sages)s 2535 X(.)s 2620 X(Email)s 2828 X(is)s 2920 X(probably)s 3203 X(the)s 3332 X(most)s 3509 X(useful)s 2256 X 2844 Y 2390 X(communications)s 2867 X(tool)s 3005 X(a)s 3069 X(systems)s 3315 X(administrator)s 2256 X 2917 Y 2390 X(has)s 2479 X(.)s 600 X 4967 Y f.B 10 Z(1993)s 754 X(LISA)s 931 X(\261)s 986 X(November)s 1305 X(1)s 1338 X(-5,)s 1432 X(1993)s 1586 X(\261)s 1641 X(Monterey,)s 1958 X(CA)s 3687 X(7)s 5280 Y pagebot %%Page: 8 8 pagetop stdencoding /NTimes-Bold /Times-Bold RE /f.B /NTimes-Bold findfont def f.B 10 Z 360 X 215 Y(Collaborative)s 771 X(Networked)s 1108 X(Communication:)s 1612 X(MUDs)s 1819 X(as)s 1900 X(Systems)s 2152 X(Tools)s 3303 X(Evard)s 360 X 448 Y 423 X f.Y 10 Z(\017)s 494 X stdencoding /NTimes-Roman /Times-Roman RE /f.R /NTimes-Roman findfont def f.R 10 Z(News)s 683 X(\(or)s 797 X(USENET)s 1090 X(news\),)s 1303 X(is)s 1385 X(a)s 1452 X(system)s 1675 X(that)s 360 X 521 Y 494 X(allows)s 726 X(a)s 813 X(document)s 1133 X(to)s 1242 X(be)s 1361 X(spooled)s 1624 X(on)s 1746 X(a)s 360 X 594 Y 494 X(machine)s 756 X(for)s 868 X(some)s 1044 X(time,)s 1216 X(where)s 1414 X(many)s 1598 X(people)s 360 X 667 Y 494 X(can)s 629 X(access)s 843 X(it)s 881 X(.)s 962 X(News)s 1156 X(can)s 1290 X(be)s 1394 X(shared)s 1609 X(across)s 360 X 740 Y 494 X(many)s 673 X(machines)s 957 X(or)s 1043 X(isolated)s 1283 X(to)s 1366 X(one)s 1493 X(site)s 1587 X(.)s 1658 X(It)s 1731 X(is)s 360 X 813 Y 494 X(good)s 657 X(way)s 798 X(to)s 880 X(communicate)s 1271 X(with)s 1420 X(many)s 1598 X(people)s 360 X 886 Y 494 X(about)s 686 X(various)s 926 X(topics)s 1130 X(in)s 1227 X(a)s 1302 X(non)s 1446 X(time)s 1566 X(-critical)s 360 X 959 Y 494 X(manner)s 694 X(.)s 774 X(News)s 967 X(is)s 1053 X(perhaps)s 1301 X(the)s 1424 X(best)s 1573 X(way)s 1724 X(to)s 360 X 1032 Y 494 X(send)s 644 X(announcements)s 1087 X(that)s 1216 X(many)s 1392 X(people)s 1599 X(should)s 360 X 1105 Y 494 X(see)s 580 X(.)s 658 X(Multi)s 807 X(-party)s 1005 X(discussions)s 1348 X(can)s 1479 X(work)s 1653 X(rela-)s 360 X 1178 Y 494 X(tively)s 682 X(well)s 833 X(in)s 920 X(news,)s 1109 X(but)s 1230 X(can)s 1359 X(take)s 1507 X(time,)s 1680 X(and)s 360 X 1251 Y 494 X(have)s 666 X(a)s 742 X(tendency)s 1028 X(to)s 1125 X(diverge)s 1370 X(into)s 1519 X(irrelevant)s 360 X 1324 Y 494 X(topics)s 654 X(.)s 736 X(News)s 931 X(is)s 1020 X(normally)s 1305 X(accessed)s 1584 X(by)s 1694 X(the)s 360 X 1397 Y 494 X(readers)s 710 X(if)s 774 X(and)s 893 X(when)s 1059 X(they)s 1196 X(choose)s 1403 X(to)s 1477 X(read)s 1614 X(it,)s 1691 X(not)s 360 X 1470 Y 494 X(when)s 660 X(the)s 764 X(news)s 923 X(is)s 990 X(\256rst)s 1116 X(available)s 1359 X(.)s 360 X 1561 Y f.B 10 Z(Real)s 490 X(-time)s 661 X(on)s 731 X(-line)s 880 X(communication)s 1344 X(tools)s 360 X 1652 Y 423 X f.Y 10 Z(\017)s 494 X f.R 10 Z(The)s 626 X(UNIX)s 820 X f.B 10 Z(write)s 997 X f.R 10 Z(command)s 1289 X(is)s 1363 X(used)s 1514 X(to)s 1595 X(send)s 1746 X(a)s 360 X 1725 Y 494 X(message)s 753 X(to)s 837 X(a)s 899 X(user's)s 1090 X(terminal)s 1314 X(.)s 1385 X(It)s 1458 X(can)s 1582 X(be)s 1676 X(dis-)s 360 X 1798 Y 494 X(abled)s 661 X(by)s 749 X(the)s 853 X(receiver)s 1091 X(with)s 1232 X(the)s 1336 X(use)s 1448 X(of)s 1526 X(the)s 1631 X f.B 10 Z(mesg)s 360 X 1871 Y 494 X f.R 10 Z(command)s 757 X(.)s 831 X f.B 10 Z(Write)s 1034 X f.R 10 Z(is)s 1114 X(real)s 1215 X(-time,)s 1408 X(but)s 1527 X(is)s 1606 X(incon-)s 360 X 1944 Y 494 X(venient)s 725 X(for)s 836 X(all)s 938 X(but)s 1057 X(the)s 1173 X(shortest)s 1416 X(of)s 1506 X(messages,)s 360 X 2017 Y 494 X(because)s 731 X(it)s 794 X(only)s 937 X(reads)s 1103 X(standard)s 1354 X(input)s 1515 X(and)s 1635 X(tends)s 360 X 2090 Y 494 X(to)s 568 X(create)s 751 X(a)s 803 X(mess)s 959 X(on)s 1047 X(the)s 1151 X(receiver's)s 1437 X(screen)s 1608 X(.)s 360 X 2163 Y 423 X f.Y 10 Z(\017)s 494 X f.R 10 Z(The)s 633 X f.B 10 Z(msend)s 854 X f.R 10 Z(utility)s 1051 X(is)s 1132 X(the)s 1250 X(next)s 1401 X(step)s 1545 X(up)s 1647 X(from)s 360 X 2236 Y 494 X f.B 10 Z(write)s f.R 10 Z(,)s 685 X(allowing)s 944 X(one)s 1064 X(to)s 1140 X(send)s 1286 X(messages)s 1563 X(to)s 1639 X(users)s 360 X 2309 Y 494 X(of)s 594 X(another)s 839 X(computer)s 1091 X(.)s 1175 X(The)s 1324 X(input)s 1506 X(stream)s 1731 X(is)s 360 X 2382 Y 494 X(more)s 674 X(\257exible,)s 934 X(but)s 1061 X(the)s 1185 X(output)s 1397 X(still)s 1541 X(tends)s 1724 X(to)s 360 X 2455 Y 494 X(clutter)s 688 X(up)s 776 X(the)s 880 X(receiver's)s 1166 X(terminal)s 1390 X(.)s 360 X 2546 Y f.B 10 Z(Interactive)s 694 X(on)s 764 X(-line)s 913 X(communications)s 360 X 2637 Y 423 X f.Y 10 Z(\017)s 494 X f.R 10 Z(The)s 629 X(UNIX)s 826 X f.B 10 Z(talk)s 968 X f.R 10 Z(command)s 1262 X(is)s 1339 X(useful)s 1534 X(for)s 1643 X(short)s 360 X 2710 Y 494 X(conversations)s 889 X(between)s 1140 X(two)s 1268 X(people)s 1446 X(.)s 1513 X(Enhanced)s 360 X 2783 Y 494 X(versions)s 738 X(of)s 815 X(it)s 875 X(allow)s 1046 X(conversations)s 1435 X(between)s 1680 X(any)s 360 X 2856 Y 494 X(number)s 729 X(of)s 816 X(people)s 994 X(.)s 1065 X(It)s 1138 X(is)s 1214 X(as)s 1301 X(real)s 1402 X(-time)s 1575 X(as)s 1662 X(it)s 1731 X(is)s 360 X 2929 Y 494 X(possible)s 757 X(to)s 853 X(get)s 979 X(over)s 1141 X(an)s 1248 X(ASCII)s 1466 X(connection,)s 360 X 3002 Y 494 X(allowing)s 765 X(one)s 898 X(to)s 987 X(see)s 1110 X(the)s 1229 X(typos)s 1410 X(made)s 1592 X(by)s 1694 X(the)s 360 X 3075 Y 494 X(other)s 662 X(person)s 839 X(.)s 909 X(We)s 1033 X(found)s 1218 X(talk)s 1350 X(to)s 1434 X(be)s 1529 X(annoying)s 360 X 3148 Y 494 X(primarily)s 775 X(because)s 1019 X(it)s 1089 X(is)s 1165 X(extremely)s 1464 X(interruptive)s 360 X 3221 Y 494 X(\(drat,)s 685 X(which)s 896 X(window)s 1158 X(is)s 1251 X(that)s 1401 X(beep)s 1576 X(coming)s 360 X 3294 Y 494 X(from?\),)s 718 X(there)s 878 X(is)s 949 X(a)s 1005 X(confusion)s 1292 X(between)s 1540 X(talk)s 1666 X(pro-)s 360 X 3367 Y 494 X(tocols)s 687 X(on)s 786 X(various)s 1015 X(operating)s 1301 X(systems,)s 1564 X(and)s 1694 X(the)s 360 X 3440 Y 494 X(interface)s 753 X(is)s 822 X(in\257exible)s 1099 X(and)s 1219 X(primitive)s 1465 X(.)s 1528 X(Nonethe-)s 360 X 3513 Y 494 X(less)s 617 X(we)s 717 X(do)s 805 X(use)s 916 X(it)s 976 X(occasionally)s 1311 X(.)s 360 X 3586 Y 423 X f.Y 10 Z(\017)s 494 X f.R 10 Z(Internet)s 735 X(Relay)s 924 X(Chat,)s 1101 X(or)s 1190 X f.B 10 Z(irc)s f.R 10 Z(,)s 1320 X(is)s 1399 X(a)s 1463 X(global)s 1664 X(chat)s 360 X 3659 Y 494 X(program)s 719 X(.)s 786 X(It)s 855 X(is)s 928 X(useful)s 1118 X(for)s 1222 X(interactive)s 1533 X(real)s 1634 X(-time)s 360 X 3732 Y 494 X(conversations)s 952 X(between)s 1266 X(multiple)s 1581 X(people)s 1759 X(.)s 360 X 3805 Y 494 X(While)s 681 X(it)s 742 X(would)s 931 X(have)s 1080 X(solved)s 1277 X(most)s 1430 X(of)s 1508 X(our)s 1618 X(initial)s 360 X 3878 Y 494 X(needs,)s 688 X(we)s 791 X(chose)s 968 X(not)s 1078 X(to)s 1155 X(use)s 1269 X(it)s 1332 X(because)s 1569 X(of)s 1650 X(code)s 360 X 3951 Y 494 X(stability)s 753 X(problems,)s 1060 X(and)s 1198 X(because)s 1452 X(we)s 1572 X(weren't)s 360 X 4024 Y 494 X(sure)s 641 X(that)s 778 X(it)s 852 X(would)s 1054 X(truly)s 1216 X(be)s 1315 X(exclusive)s 1605 X(to)s 1694 X(the)s 360 X 4097 Y 494 X(systems)s 728 X(group)s 882 X(.)s 360 X 4170 Y 423 X f.Y 10 Z(\017)s 494 X f.R 10 Z(Zephyr,)s 731 X(the)s 841 X(communications)s 1312 X(server)s 1504 X(from)s 1662 X(Pro-)s 360 X 4243 Y 494 X(ject)s 632 X(Athena,)s 882 X(provides)s 1151 X(a)s 1221 X(networked,)s 1559 X(scalable)s 360 X 4316 Y 494 X(messaging)s 802 X(service)s 1019 X(that)s 1147 X(is)s 1219 X(accessible)s 1519 X(via)s 1628 X(many)s 360 X 4389 Y 494 X(types)s 662 X(of)s 744 X(clients)s 920 X(.)s 986 X(It)s 1053 X(allows)s 1254 X(real)s 1355 X(-time)s 1523 X(messages)s 360 X 4462 Y 494 X(to)s 573 X(be)s 664 X(sent)s 800 X(from)s 957 X(one)s 1081 X(person)s 1286 X(to)s 1366 X(any)s 1490 X(number)s 1721 X(of)s 360 X 4535 Y 494 X(people)s 696 X(who)s 834 X(are)s 939 X(on)s 1028 X(the)s 1133 X(local)s 1287 X(network)s 1528 X(\(for)s 1650 X(vari-)s 360 X 4608 Y 494 X(ous)s 610 X(de\256nitions)s 916 X(of)s 995 X(local\))s 1148 X(.)s 1211 X(With)s 1369 X(the)s 1475 X(right)s 1626 X(client)s 360 X 4681 Y 494 X(it's)s 604 X(possible)s 847 X(to)s 922 X(use)s 1034 X(Zephyr)s 1249 X(to)s 1324 X(have)s 1473 X(an)s 1559 X(ongoing)s 360 X 4754 Y 494 X(conversation)s 835 X(.)s 901 X(More)s 1072 X(importantly,)s 1428 X(it)s 1494 X(can)s 1615 X(locate)s 2016 X 448 Y 2150 X(a)s 2214 X(user)s 2359 X(anywhere)s 2652 X(on)s 2751 X(the)s 2866 X(network)s 3117 X(and)s 3246 X(deliver)s 2016 X 521 Y 2150 X(the)s 2265 X(message)s 2526 X(\(a)s 2612 X(feature)s 2832 X(that)s 2967 X(a)s 3031 X(MUD)s 3220 X(can)s 3347 X(not)s 2016 X 594 Y 2150 X(easily)s 2333 X(replicate\))s 2587 X(.)s 2651 X(We)s 2769 X(think)s 2931 X(Zephyr)s 3148 X(may)s 3288 X(be)s 3376 X(as)s 2016 X 667 Y 2150 X(useful)s 2339 X(as)s 2421 X(a)s 2477 X(MUD)s 2658 X(and)s 2780 X(will)s 2911 X(be)s 3000 X(testing)s 3206 X(it)s 3271 X(in)s 3350 X(the)s 2016 X 740 Y 2150 X(future,)s 2369 X(perhaps)s 2619 X(in)s 2714 X(conjunction)s 3072 X(with)s 3234 X(MUDs)s 3415 X(.)s 2016 X 813 Y 2150 X(We)s 2286 X(did)s 2414 X(not)s 2542 X(initially)s 2795 X(try)s 2913 X(it)s 2995 X(because)s 3251 X(of)s 3350 X(the)s 2016 X 886 Y 2150 X(dif\256culty)s 2432 X(of)s 2524 X(bringing)s 2786 X(it)s 2861 X(up)s 2964 X(in)s 3052 X(a)s 3118 X(non)s 3217 X(-Athena)s 2016 X 959 Y 2150 X(environment)s 2487 X(.)s 2016 X 1032 Y 2079 X f.Y 10 Z(\017)s 2150 X f.R 10 Z(MUDs)s 2354 X(provide)s 2580 X(a)s 2634 X(multiuser)s 2911 X(extensible)s 3207 X(environ-)s 2016 X 1105 Y 2150 X(ment)s 2319 X(that)s 2455 X(can)s 2583 X(be)s 2680 X(used)s 2836 X(as)s 2926 X(a)s 2990 X(communications)s 2016 X 1178 Y 2150 X(tool)s 2254 X(.)s 2319 X(A)s 2393 X(user)s 2531 X(connects)s 2792 X(to)s 2871 X(it)s 2936 X(by)s 3029 X(using)s 3200 X(telnet)s 3377 X(or)s 2016 X 1251 Y 2150 X(a)s 2233 X(more)s 2422 X(sophisticated)s 2824 X(client)s 2974 X(.)s 3065 X(The)s 3221 X(primary)s 2016 X 1324 Y 2150 X(disadvantages)s 2556 X(of)s 2642 X(a)s 2703 X(MUD)s 2890 X(are)s 3004 X(that)s 3137 X(it)s 3207 X(must)s 3369 X(be)s 2016 X 1397 Y 2150 X(actively)s 2397 X(administered)s 2777 X(and)s 2907 X(that)s 3042 X(the)s 3158 X(user)s 3302 X(must)s 2016 X 1470 Y 2150 X(initiate)s 2364 X(the)s 2472 X(connection)s 2765 X(.)s 2831 X(This)s 2977 X(is)s 3049 X(as)s 3132 X(opposed)s 3380 X(to)s 2016 X 1543 Y 2150 X(Zephyr)s 2381 X(or)s 2475 X(email,)s 2681 X(where)s 2883 X(the)s 3004 X(user)s 3154 X(is)s 3238 X(located)s 2016 X 1616 Y 2150 X(wherever)s 2437 X(they)s 2591 X(are)s 2712 X(logged)s 2932 X(in)s 2984 X(.)s 3084 X(These)s 3284 X(nega-)s 2016 X 1689 Y 2150 X(tives)s 2316 X(did)s 2440 X(not)s 2564 X(signi\256cantly)s 2934 X(hinder)s 3143 X(us,)s 3257 X(so)s 3354 X(we)s 2016 X 1762 Y 2150 X(elected)s 2363 X(to)s 2437 X(use)s 2548 X(a)s 2600 X(MUD)s 2755 X(.)s 2016 X 1853 Y f.B 10 Z(Interactive)s 2350 X(off)s 2427 X(-line)s 2576 X(communications)s 2016 X 1944 Y 2079 X f.Y 10 Z(\017)s 2150 X f.R 10 Z(Telephones,)s 2540 X(pagers,)s 2797 X(cellular)s 3065 X(phones,)s 3336 X(and)s 2016 X 2017 Y 2150 X(walkie)s 2329 X(-talkies)s 2574 X(are)s 2703 X(all)s 2817 X(solutions)s 3104 X(we've)s 3313 X(seen)s 2016 X 2090 Y 2150 X(used)s 2272 X(.)s 2335 X(They)s 2496 X(have)s 2646 X(their)s 2793 X(uses)s 2932 X(when)s 3100 X(one)s 3221 X(is)s 3291 X(away)s 2016 X 2163 Y 2150 X(from)s 2312 X(a)s 2375 X(computer,)s 2677 X(but)s 2795 X(are)s 2910 X(prohibitively)s 3287 X(inter-)s 2016 X 2236 Y 2150 X(ruptive)s 2339 X(.)s 2418 X(While)s 2622 X(they)s 2777 X(do)s 2884 X(solve)s 3066 X(the)s 3189 X(real)s 3290 X(-time)s 2016 X 2309 Y 2150 X(communications)s 2625 X(problem,)s 2897 X(we)s 3007 X(didn't)s 3198 X(feel)s 3331 X(that)s 2016 X 2382 Y 2150 X(provided)s 2424 X(the)s 2544 X(type)s 2697 X(of)s 2791 X(solution)s 3045 X(that)s 3185 X(we)s 3302 X(were)s 2016 X 2455 Y 2150 X(looking)s 2381 X(for,)s 2503 X(largely)s 2717 X(because)s 2956 X(of)s 3038 X(the)s 3147 X(inconveni-)s 2016 X 2528 Y 2150 X(ences)s 2342 X(that)s 2486 X(come)s 2674 X(with)s 2836 X(them)s 2970 X(.)s 3052 X(For)s 3188 X(example,)s 2016 X 2601 Y 2150 X(telephones)s 2474 X(are)s 2594 X(only)s 2750 X(effective)s 3022 X(in)s 3111 X(real)s 3212 X(-time)s 3391 X(if)s 2016 X 2674 Y 2150 X(one)s 2297 X(is)s 2393 X(near)s 2559 X(them)s 2744 X(when)s 2940 X(they)s 3107 X(ring,)s 3283 X(while)s 2016 X 2747 Y 2150 X(walkie)s 2329 X(-talkies)s 2577 X(must)s 2757 X(be)s 2869 X(carried)s 3104 X(everywhere,)s 2016 X 2820 Y 2150 X(and)s 2280 X(are)s 2396 X(constantly)s 2706 X(making)s 2941 X(noise)s 3082 X(.)s 3156 X(We)s 3284 X(origi-)s 2016 X 2893 Y 2150 X(nally)s 2318 X(thought)s 2555 X(that)s 2690 X(Star)s 2831 X(Trek)s 2990 X(communications)s 2016 X 2966 Y 2150 X(badges)s 2361 X(would)s 2554 X(be)s 2644 X(exactly)s 2865 X(what)s 3022 X(we)s 3127 X(wanted)s 3347 X(but)s 2016 X 3039 Y 2150 X(have)s 2303 X(since)s 2467 X(decided)s 2701 X(that)s 2828 X(they)s 2969 X(would)s 3161 X(simply)s 3369 X(be)s 2016 X 3112 Y 2150 X(more)s 2323 X(advanced)s 2611 X(forms)s 2802 X(of)s 2893 X(annoyance)s 3214 X(devices)s 3415 X(.)s 2016 X 3185 Y 2150 X(Perhaps)s 2386 X(the)s 2493 X(ideal)s 2649 X(solution)s 2889 X(for)s 2991 X(all)s 3084 X(of)s 3164 X(these)s 3327 X(will)s 2016 X 3258 Y 2150 X(be)s 2255 X(the)s 2379 X(light)s 2502 X(-weight,)s 2765 X(mobile,)s 3011 X(internetworked,)s 2016 X 3331 Y 2150 X(portable)s 2417 X(communications)s 2907 X(tool)s 3059 X(that)s 3207 X(may)s 3369 X(be)s 2016 X 3404 Y 2150 X(turned)s 2360 X(off)s 2478 X(and)s 2615 X(ignored)s 2859 X(when)s 3044 X(necessary)s 3304 X(.)s 3384 X(A)s 2016 X 3477 Y 2150 X(Powerbook)s 2515 X(running)s 2784 X(PPP)s 2958 X(over)s 3138 X(a)s 3230 X(cellular)s 2016 X 3550 Y 2150 X(modem)s 2377 X(could)s 2552 X(provide)s 2783 X(interesting)s 3094 X(possibilities,)s 2016 X 3623 Y 2150 X(for)s 2249 X(a)s 2301 X(price)s 2435 X(.)s 2016 X 3717 Y 2160 X(Looking)s 2426 X(at)s 2516 X(all)s 2625 X(the)s 2748 X(options,)s 3003 X(we)s 3123 X(felt)s 3255 X(that)s 3398 X(the)s 2016 X 3790 Y(combination)s 2390 X(of)s 2485 X(electronic)s 2790 X(mail)s 2950 X(and)s 3086 X(MUDs)s 3306 X(solved)s 2016 X 3863 Y(nearly)s 2228 X(all)s 2341 X(of)s 2441 X(our)s 2574 X(internal)s 2824 X(communications)s 3311 X(needs)s 3463 X(.)s 2016 X 3936 Y(Neither)s 2264 X(completely)s 2608 X(solves)s 2821 X(the)s 2949 X(problem,)s 3234 X(but)s 3365 X(they)s 2016 X 4009 Y(work)s 2185 X(as)s 2274 X(nice)s 2420 X(complements)s 2811 X(to)s 2897 X(each)s 3054 X(other)s 3191 X(.)s 3264 X(We)s 3391 X(use)s 2016 X 4082 Y(email)s 2221 X(primarily)s 2525 X(for)s 2656 X(internal)s 2915 X(announcements)s 3384 X(and)s 2016 X 4155 Y(instructions,)s 2392 X(and)s 2536 X(the)s 2666 X(MUD)s 2869 X(primarily)s 3166 X(for)s 3291 X(on)s 3357 X(-line)s 2016 X 4228 Y(coordination)s 2375 X(and)s 2493 X(planning)s 2726 X(.)s 360 X 4967 Y f.B 10 Z(8)s 2026 X(1993)s 2180 X(LISA)s 2357 X(\261)s 2412 X(November)s 2731 X(1)s 2764 X(-5,)s 2858 X(1993)s 3012 X(\261)s 3067 X(Monterey,)s 3384 X(CA)s 5280 Y pagebot %%Trailer lastpage