Nightmare mudlib lfun: clean_up()

void clean_up();

This function is automatically called if it exists in an object and has not
had any functions in it called for a certain amount of time.  You can also
have this function as an int and return 1.  If void or returning 0, then
clean_up() will only get called once (it should be destructed that once).
However, if there are conditions under which you want the object to 
destruct, then you might want it to return 1 for when it does not destruct.
If clean_up() returns a 1, then it is set up to be called in the future if
it again goes a long time without being used.
This function exists to clear memory out of objects which simply are not
being used.  All objects inheriting /std/move.c in the Nightmare mudlib
(this would be Object.c, bag_logic.c, weapon.c, room.c, armour.c, and just
about any other mudlib object), have a predefined clean_up() which checks
to see if the creator has not disabled the clean_up().  To make your object
not clean up, use:

set_no_clean(1);

This should only be used for objects which can mess up things
by being cleaned.

The mud administrator defines the time until clean_up() is called in the mud
config file.