+.It Cm button2
+Fake a middle mouse button click (mouse button 2).
+.It Cm width_shrink
+Shrink the width of a floating window.
+.It Cm width_grow
+Grow the width of a floating window.
+.It Cm height_shrink
+Shrink the height of a floating window.
+.It Cm height_grow
+Grow the height of a floating window.
+.It Cm move_left
+Move a floating window a step to the left.
+.It Cm move_right
+Move a floating window a step to the right.
+.It Cm move_up
+Move a floating window a step upwards.
+.It Cm move_down
+Move a floating window a step downwards.