[Inkscape-user] Getting Inkscape to work as a template editor

I have a design that is created in Inkscape, its a poster that has visual, and informational elements to it. The information bits are subject to change. Is there a way that I can get Inkscape to pull the data from a datasource [i.e. XML]?

Is a tr [preprocessing] the only way to go with this?

The task I am attempting to accomplish is to create a shell script that'll accept a specific dataset to pass onto the template, use inkscape to transform the inkscape resulting file into a PDF. etc -Steven