allow customization of left and right mouse buttons in their unique states, that is : left click select, left click move, left lick attack etc.....
or like :
+move leftmouse
+attack leftmouse
+guard leftmouse
+select leftmouse
+deselect rightmouse
etc....you know what I meen ?
it's not at all hard, I meen just add those things into the uikeys.txt file.