* src/en/book/ch03-advanced-topics.xml
(svn.advanced.props.special.keywords): Document the $Header$ keyword. While here, use example.com in an example URL, instead of using a real URL. Fixes issue #95.
Patch by: Andreas Stieger <andreas.stieger@...>
Authored by: stsp@elego.de 2010-10-13
Parent: [r3793]
Child: [r3795]
