i :=,iside,s)

Removes the group name s from the face identified by z and iside in any slot where it is found. The return value is 0 if the specified group is not assigned to that face.


i - 0 if the group is not found, nonzero otherwise


z - zone pointer

iside - side of the zone indicating the face, from 1 to 6

str - group name or index*


*Use the group.find and group.find.slot intrinsics to obtain group and slot indices, respectively, and for further information.

Use of the group logic is described in Groups.