Vim: keyboard shortcut command?

Question

vim

I want to put on the execution of the command ": w". As simple as possible, like:
map < C - w > :w< cr > (doesn't work for some reason)
and
map < Cs > : w< cr > - generally vim hangs.
How to do it right?

Answer 1

map <C-w> :w<CR>
but generally ctrl + w by default jump between windows