Text editing: macros, rectangular editing, CTRL-{a,e,k,y} to move fastly in a line without changing modes like in vi. Opening remote files via ssh. Also: window

Text editing: macros, rectangular editing, CTRL-{a,e,k,y} to move fastly in a line without changing modes like in vi. Opening remote files via ssh. Also: window splitting, web mode, eshell (a shell that behaves almost like a text buffer so you can go back and copy stuff, CTRL+B to move up) Also: tetris (M-x tetris)