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editor->mark
editor ->mark: mark=[int], status=[{active,inactive,highlight}]
Set mark and region-status. The region (selection) is defined by the characters in the range [editor<-mark ... editor<-caret) or [editor<-caret .. editor<-mark) if the caret is before the mark. The old position of the mark is pushed in editor<-mark_ring. If the mark is active, it can be used for region-commands.

See also editor->set_mark, editor<-mark_ring and editor->selection.

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