Add documentation for floating resize

diff --git a/docs/userguide b/docs/userguide
index b7c84b2101a496228f56ee2e32cb5560be39a4dc..2910e29bc2c055912eaade4bec0df03077737964 100644 (file)
--- a/docs/userguide
+++ b/docs/userguide
@@ -283,6 +283,9 @@ it as the same one you use for managing windows (Mod1 for example). Afterwards,
 you can press Mod1, click into a window using your left mouse button and drag
 it to the position you want it at.
 
+When holding the floating modifier, you can resize a floating window by pressing
+the right mousebutton on it and moving around holding it.
+
 *Syntax*:
 --------------------------------
 floating_modifier <Modifiers>