Vim to remember

It’s easy to get stuck doing only what you already know in vim, so here are some from vimgolf – which I highly recommend – that I’ve found pretty cool:

• . repeat the insert-mode command from normal-mode
• <C-@> is a null character, apparently - but it also seems to repeat the last added character. Like . when in insert-mode.
• ctags will let you use <C-]> to jump to definitions across a project!
• also under ctags; use <C-t> go to cursor location before the last tag jump