> Have this working for HTML output files only.  When I try to 
> generate the svg file, I get the following error ...
> "The system identifier of the principal output file is 
> unknown".  Using Saxon 7.1

Saxon 7.1 is a very old release, you need to move forward.

When you use a relative URI in the href attribute of xsl:result-document, it
is resolved relative to the "base output URI". In Saxon you set this from
the command line using the -o option. So the -o option must be specified,
even if all the output goes to secondary output files.

Michael Kay

> 
> Have the following specified in the stylesheet.
> 
> <xsl:output method="html"/>
> <xsl:output name="svg-format" method="xml"/>
> 
> <xsl:result-document href="test.html">...</xsl:result-document>
> <xsl:result-document href="test.svg" 
> format="svg-format">...</xsl:result-document>
> 
> 
> Thanks,
> Anita