[GIS] Seeking ArcGIS Desktop Tips and Tricks

arcgis-10.0arcgis-desktoparcmapreferencesux

A couple times a month, I check out the various tips and tricks CW posts on Stack Overflow and always learn something new.

I went back and forth as to whether to pin this question to a specific program of a specific, major version of GIS software. Given the amount of change to the ux, I think ArcGIS Desktop 10 should get its own Tips and Tricks question and will be a great resource for new ArcGIS users and ArcGIS 10 users upgrading from 9.3.

Hope to see some good tips that aren't already covered in the ESRI ArcGIS Desktop Tips and Shortcuts.

ArcMap

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Even some GIS Administrators do not know about this one.

C:\Program Files (x86)\ArcGIS\Desktop10.0\Utilities (on Windows)

Advanced ArcMap Settings tool

I need to update this http://mapperz.blogspot.com/2007/02/esri-arcgis-92-tips-and-tricks.html (just don't the have time, anyone can update - will re-post with full credit)