remove Lock = Caps_Lock
keysym Caps_Lock = Escape
-clear Mod1
-clear Mod4
+! switch Alt_L and Super_L
+remove Mod4 = Super_L
+remove Mod1 = Alt_L
add Mod1 = Super_L
add Mod4 = Alt_L
+
+! Alt_R as 3rd level chooser
+remove Mod1 = Alt_R
+add Mod5 = Alt_R