Ask HN: Do you use XML with XSD and/or XSLT, if so for what purpose?

Building a floorplan format which should be convertible to a visual SVG and back. Wondering if defining my own schema to represent the layout of a venue is a good idea or not or if I should simply embed everything into an SVG to maintain flexibility with minimal work.

Are you using XML with XSD and XSLT and for which purpose?