Fixed ""-must-be-null problem for results returned from the database. I added a utility in json-procs.tcl to help with this, but since I al…
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Fixed ""-must-be-null problem for results returned from the database. Iadded a utility in json-procs.tcl to help with this, but since I also neededto convert PG intervals to the "PT01H02M03.5S" format used by the SCORM RTEin actuality it's fixed in the scorm player package. But the JSON proc maybe useful for someone else so I left it in ...
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