remapping left click in 3D view I'm using Blender 2.73 with a 3 button mouse on Windows.

In the User Preferences I've changed the mapping for Set 3D Cursor from Action Mouse to Alt Action Mouse.  (Like many Blender newbies I keep accidentally left clicking.)

I can't find anywhere what the mappings are for various key and mouse combinations so I'm wondering if I'll regret this remapping in the future?
you can search for key combinations in Preferences->input  to see what it is used for