I've just started playing with oXygen as an XML plug-in for Eclipse. So far, it seems great; however, I've got a large set of XSL stylesheets I'd like to work on, and unfortunately the built-in validation says that they're invalid. They do currently work, using Xalan as the XSL-processing engine, so I'm reluctant to change the structure radically. In a nutshell, here's what's happening; this is obviously a huge simplification, and in the real project I get a *zillion* similar warnings: ----- Main file ----- <xsl:transform> <xsl:include href="include/file1.xsl"/> <xsl:include href="include/file2.xsl"/> </xsl:transform> ----- End main file ----- ----- include/file1.xsl ----- <xsl:transform> <xsl:variable name="foo">abc</xsl:variable> </xsl:transform> ----- End of file1.xsl ----- ----- include/file2.xsl ----- <xsl:transform> <xsl:template match="root"> <root foo="{$foo}"/> </xsl:template> </xsl:transform> ----- End of file2.xsl ----- This successfully transforms the tiny document "<root/>" into "<root foo='abc'/>"; however, when I open include/file2.xsl in oXygen, I always get a warning that variable "foo" has not been initialised. Is there a way to make that not happen? Thanks for any suggestions, MEF -- Mary Ellen Foster http://homepages.inf.ed.ac.uk/mef/