One thing I love to do is provide self-documenting code and configurations. Well when I have to customize sets the XPATH filter can get a bit complex so I recently found a way to comment the XPATH Filter in my sets and groups:
/Person[starts-with(DisplayName,'%')] <!-- Only with DisplayName --> </Filter>
By using <!-- --> to enclose my comments and only after the last closing ] of the predicate I can comment on the filter itself.
The following will error (don’t put the comment inside the predicate .
/Person[starts-with(DisplayName,'%') <!-- Only with DisplayName -–> ]</Filter>