= Emacs = GNU Emacs is an extensible, customizable text editor == Keyboard shortcuts == || Command || Shortcut || ||Open file || Ctrl+x Ctrl+f|| || Select || Shift and cursor keys|| || Select || Ctrl+space|| || Copy || Alt+w || || Cut || Ctrl+w || || Paste || Ctrl+y || || Save || Ctrl+x Ctrl+s || || Previous buffer || Ctrl+x left cursor || || Next buffer || Ctrl+x right cursor || || Quit || Ctrl+x Ctrl+c ||