Tried to include a JRXML string variable with “$Revision$” as initial expression. It’s impossible to have such a string, as “$” is expected to start something JRXML specific like a field, a variable (itself!!), a paramater. And including a backslash “” destroys the idea resp. the effect.
So: no RCS / CVS / subversion strings in JRXML. Alright within XML comments they work. But then: you never know for sure, what iReport does with your XML comments. With any future release they may decide to remove XML comments. Then you are pissed.