declaration/definition
save groups
At the start of a rule, a save groups
declaration, together with the other local declarations and save declarations, can be used to save the groups currently active. When the rule ends, the groups will be restored, no matter what changes have been made to them while the rule is processing.
The save groups
declaration is like the save
declaration except that it applies to groups rather than to OmniMark shelves.
The save groups
declaration must appear before any actions.