Vim split-screen display

Horizontal cutting:
: Split
: Split XXX (file name to open)
: New (create a file in the new window)
<Ctrl + W> K: Jump to the window above (if it is capital K, the current window is raised to the top)
<Ctrl + W> J: Jump to the following window (similar to the above)
Vertical cutting:
: Vsplit
: Vsplit XXX (file name to open)
: Vnew (create a file in the new window)
: Only cancelSplit screen
<Ctrl + W> H: Jump to the Left window (if it is uppercase H, it is to adjust the current window to the left)
<Ctrl + W> L: the window to the right (similar to the top)
<Ctrl + W> W: jump between windows
<Ctrl + W> +: Expand the window (or at the current window position, enter the command: res + 9)
<Ctrl + W>-: Zoom out the window
Open three files in a window.
Open a file named Vim first (remember it must be vim !)
ThenVIIn the command input status.
: SP path and file name of another file
In this way, three files can be opened in a window.
Press Ctrl + twice
Switch among the three files