See
http://www.oxygenxml.com/doc/ug-oxygen/validation-scenario.html

Best Regards,
George
--
George Cristian Bina
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
http://www.oxygenxml.com

I'm aware that if you import the same file in multiple locations you
end up with multiple copies of that file in the compiled module, so if
possible it should be avoided - does the same apply with xsl:include?

So instead of:

A includes common
A includes 100s of stylesheets

you have:

A includes 100s which each include common

With the latter approach the variables/templates in common are known
to each stylesheet so the IDE (oXygen) doesn't complain that they're
undefined... is there any problem with doing this?

thanks