As mentioned earlier, Verbs are associated with Groups, where only a single
Group may be active at any one time. In a Multi-Programmer environment, where
several people are working on modules to be merged into an overall program,
it is possible that one person will attempt to add Verbs etc. to the same
Group as another by mistake. This is especially true if they do not assign
a free Group ID but assume fixed Groups. In order to prevent this, a Group
may be ``Locked" such that all subsequent attempts to define more Verbs and
Menus, or delete Verbs and Menus within the Group will be treated as illegal.
A Password must be specified when Locking a Group, and the same Password must
be specified for an attempt to unlock the Group to be satisfied.
Note that already existing Menus within a Locked Group may still be modified.