forget Forgets the name for a box in the name space.
Synopsis
#include <ulib.h>
void forget(char* name, char* sel);
Description
Forget forgets the name of a named box. It is used to undo the effect of calls to import(2). If sel is given, only the entry added for a box named and constrained by sel is dropped. If sel is nil, all entries matching name are dropped.