Focus previous window.
.TP
.B Mod1-Return
-Zoom current window to the master column (tiling mode only).
-.TP
-.B Mod1-m
-Maximize current window.
+Zooms/cycles current window to/from master column (tiling mode), toggles maximization (floating mode).
.TP
.B Mod1-g
Grow current column (tiling mode only).