The PlanExporter tool relies on default style sheets which users should be able to customize. Derby's model for this kind of customization can be seen in how we handle the security policy file:
o There is a template policy file parked next to the default policy file in the codeline. They are pretty much copies of one another.
o When building a release, we copy the template policy file into demo/templates
o The user documentation explains how to customize the template policy file found in demo/templates
We should do something similar for the PlanExporter's customizable style sheets.