/* Exit flags */
XSECRT          1        Secret 
XINVIS          2        Invisible 
XLOCKD          3        Locked 
XCLOSD          4        Closed 
XLOCKS          5        Lockable 
XCLOSS          6        Closable 
XUNPCK          7        Un-pickable lock 
XNAKED          8        Naked exit 
XCLIMB          9        Climbing gear required to go up 
XREPEL          10       Climbing gear required to repel 
XDCLIM          11       Very difficult climb 
XFLYSP          12       Must fly to go that way 
XFEMAL          13       Female only exit 
XMALES          14       Male only exit 
XPLDGK          15       Pledge player exit only 
XKNGDM          16       Exit for kingdom 0/1 
XNGHTO          17       Only open at night 
XDAYON          18       Only open during day 
XPGUAR          19       Passive guarded exit 
XNOSEE          20       Cannot use / see exit