A xsl-fo WYSIWYG editor allows for editing in the XSL Formatting Objects markup language for free.
One unique feature of MiniScribus is that it can read and edit 95% of all sample files from the Apache FOP project. However, it's important to keep in mind that some elements such as table/cell borders and markers, as well as page footer notes, may not be able to display at the moment. But overall, if you're looking for a software to assist with XML document formatting and PDF generation, MiniScribus may be worth considering.
Version 1.0.3: N/A