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There is documentation, see
http://www.slac.stanford.edu/exp/glast/ground/software/notes/rdbGui/rdbGui-use.shtml
Older but still of some merit is the following.
http://www.slac.stanford.edu/exp/glast/ground/software/calibration/docs/mysqlDirect.shtml
Once you've mastered rdbGUI and you've added your file names to the metadata database, triple check your entries. It is very important that vstart be consistent with the data you want (re-)processed. If your calibrations are to supersede older calibrations, that is, render the old ones obsolete, then YOU MUST CHANGE THE PROC_LEVEL FROM PROD TO SUPSED for the old file names.
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