https://vi.stackexchange.com/questions/514/how-do-i-change-the-current-splits-width-and-height/518
:set mouse=n
:set ttymouse=xterm2
https://vi.stackexchange.com/questions/514/how-do-i-change-the-current-splits-width-and-height/518
:set mouse=n
:set ttymouse=xterm2