Listing of Xmodmap pointer versus button actions

[R. G. Newbury]

I have been trying to find a reference for the expected actions of mouse 
buttons (actually a Logitech trackball), in order to create a useful 
'pointer = 1 2 3' etc. line.

For example what is 'pointer = 8' *supposed* to do? This action would be 
bound to button 1 if this line were fed to xmodmap.

I have been completely unable to find any assistance inthe man pages or 
online. Can someone help with a pointer?
Geoff


          Tux says: "Be regular. Eat cron flakes."