XSL FO step

I think we need to think about having an optional XSL FO step.  I would
see this working like the "store" step.  The step wouldn't
have an output and the rendered document would be saved to a URI
specified either by parameter or by a mangling of the base URI of
the input document (e.g. change foo.xml to foo.pdf).

-- 
--Alex Milowski
"The excellence of grammar as a guide is proportional to the paucity of the
inflexions, i.e. to the degree of analysis effected by the language
considered."

Bertrand Russell in a footnote of Principles of Mathematics