:sp filename # Vertical split windows
:vsp filename # Vertical split windows
:ctrl+w s # Horizontal Split
:ctrl+w v # Vertical Split

# move

- Ctrl-w h : left
- Ctrl-w l : right
- Ctrl-w j : down
- Ctrl=w k : up

# Resize

- Ctrl-w + : add height
- Ctrl-w - : sub height
- Ctrl-w > : add width
- Ctrl-w < : sub width

:resize 10 : set size 10

# Buffer

:ls # buffer list
:b [num] # move buffer
:bn # move next buffer
:bp # move prev buffer

# Tab

:tabnew [file] # openfile with tab
:gt # next tab
:gT # prev tab
:tabs # check tabs