This should be the place to look for information about the various scripts supported by ISG, particularly for situations that aren't covered by the information in the man pages ( and duplicated at http://www.student.cs.uwaterloo.ca/~isg/scripts )
Those involved with editing scripts on the ISG account should check the information about the ISGAccount; in particular, ISGAccountScriptConventions and ISGTechnicalDirection.
As a special case for the fall 2010 term, there's information about ScriptUpdatesForFall2010 to inform ISCs/instructors/other appropriate staff about changes/updates to the ISG scripting environment.