musicmud-2.1.6/data/
musicmud-2.1.6/data/help/
musicmud-2.1.6/data/policy/
musicmud-2.1.6/data/wild/
musicmud-2.1.6/data/world/
musicmud-2.1.6/doc/
musicmud-2.1.6/src/ident/
musicmud-2.1.6/src/lua/
musicmud-2.1.6/src/lua/include/
musicmud-2.1.6/src/lua/src/lib/
musicmud-2.1.6/src/lua/src/lua/
musicmud-2.1.6/src/lua/src/luac/ 
  If you are swimming underwater and there is a surface above you, surface.

see also
  $[swim$], $[dive$]