Region Groups: every region has a group-id. regions that have the same group-id (excepting zero) are 'grouped' if you select a 'grouped' region, then all other regions in the group will be selected operations like Import, Record, and Paste assign a group-id to the new regions they create users can explicitly group regions, which implies a stronger connection and gets the 'explicit' flag users can explicitly ungroup regions, which prevents ardour from applying equivalent-regions logic regions with no flags and no group-id (prior sessions) will revert to equivalent-regions logic RegionGroupRetainer is an RAII construct to retain a group-id for the length of an operation that creates regions
Definition at line 181 of file ardour/ardour/region.h.