... Meta Index . This task constructs RGS event-selection regions. It reads an event list processed by rgsfilter and modifies a source list created by rgssources . Flag columns in the SRCLIST table determine which regions are added to the source list. This task should be run any time the existing set of regions gets out of date. ... As a convenience, this task may also be used to edit the flag columns in the SRCLIST table. ... Input Files . Output Files . ... Index . ...