I'm wondering if it is simple to ask a processing engine to search for included resources through several paths rather than just the base path of the document being processed.  E.g., suppose a processor encounters

<synph conref="../foo/bar.xml#here">xxx</synph>

If the document in which this occurs is located at /my/test/area/doc1, having been extracted from /company/repository, one would like to have the processor search first in /my/test/area/foo for bar.xml, and failing that, follow on by looking in /company/repository/foo for bar.xml.  So the resource search path might be set to

/my/test/area/doc1 : /company/repository/doc1

We have some other tools in place which provide this functionality and I wonder if the Toolkit already does or can easily be configured to do so.

Thanks for any help.

-Ron