:earlierit's used to go back in the history (check out https://github.com/mbbill/undotree (preferred) and http://sjl.bitbucket.org/gundo.vim/ to visualize the tree)
@:repeat the last command (=> therefore space can be kept as a leader, especially since after @: you can just use
@@to rerun the command)
<C-y>repeat the words above the cursor
<C-Alt>will trigger block select for the mouse (not a Vim feature; depends on your terminal emulator) => works for xfce-terminal and ROXterm
:redir, that can use the new execute() function (e.g.