How can I do a `svn revert <file>` from [Emacs Version Control](http://www.emacswiki.org/emacs/VersionControl)?  

I've read many parts of [the manual](http://www.gnu.org/software/emacs/manual/html_node/emacs/Version-Control.html#Version-Control), but can't find it.

I would like to do it over a file after opening it with `vc-directory` `C-x v d`, but any other way would be helpful.