SetExitLightstrength(exit, string value)
Define an exit as a lightsource. A possible value is:
”” (empty string) : exit is not a lightsource and is not visible in a dark room
“weak” : exit is visible in a dark room
“strong” : exit enlightens a dark room, so the normal room description is shown
See also SetDark, SetLight, SetObjectLightstrength, CheckDarkness
This command was added in Quest 5.3.