Is it possible to decorate the Google Calendar or GMail UIs using Google Apps Script?
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When I heard about Google Apps Script, I thought that, among other things, it allowed you to add or change UI elements in the existing Google Apps as the Labs extensions do.  Was that just a misunderstanding or would it be possible to make additions/changes to Google Calendar or GMail?  I was thinking of changing the create/edit event window in Google Calendar to support auto-complete in the "Where" field, drawing on addresses in a user's contacts.