- Please see: http://knol.google.com/k/christine-the-guide/google-docs-help-goto-the-google-docs/2vcnhxffa8r42/6#
- You may also be interested inthe Google Gadgets API ( for Google Docs spreadsheets and iGoogle): http://code.google.com/apis/gadgets/
- The Google Visualisation API (used a.o. by the gadgets): http://code.google.com/apis/visualization/
- The Google Apps API: http://code.google.com/apis/apps/