Buttonmaps

 Maps mouse buttons to key functions
   Format: <button><key>... just like the keymap
   Available buttons:

   1 = left
   2 = middle
   3 = right
   4 = Shift+Left
   5 = Shift+Middle
   6 = Shift+Right
   7 = Control+Left
   8 = Control+Middle
   9 = Control+Right
   a = Shft+Ctrl+Left
   b = Shft+Ctrl+Middle
   c = Shft+Ctrl+Right
buttonmap: 1a2p3k