[OT] CVS version strings

[Jeremy Quinn]

Hi All,

I like the trick in the Cocoon source code whereby the CVS version, 
date and committer username is embedded in the source files. I would 
like to do the same with one of my repositories.

How does this get inserted into our files, and kept up to date? :

eg.

  * @version CVS $Id: InterpreterSelector.java,v 1.2 2003/03/16 
17:49:11 vgritsenko Exp $

Is this done by hand, or through some CVS or Ant magic?

Thanks for any help

regards Jeremy