3:/std/room/terrain.c (/std/room.c)
(int) terrain_includes_all(int terrain)
/*
 * Function name: terrain_includes_all
 * Description  : Checks if the room contains terrain of a 
 *                certain type (or combination of types)
 * Arguments    : int terrain - the terrain (or combination of terrains) 
 *                to check for
 * Returns      : in - 1 if terrain matches the room, 0 otherwise
 */
