Properties Font and r/w rules reference

[luca finocchiaro]

I'm using Fm9 on xp, I have to control the Stretch value in Properties Font
in every instance, in particular I have to retain changes I made with FM, up
to now when I open my xml file changes are lost. I suppose I have to declare
this attribute in r/w rules but I don't know the sintax. Can someone help
me? Or where can I find a complete reference for r/w rules? I have the
Structured Application Devepoper Reference and Guide but is too lacking.
thank you.