Documentation should rely on stylesheets for XML not txt tools

[Sid]

I'm aware of FreeBSD's XSLT and DSSSL stylesheets, mentioned at https://www.freebsd.org/doc/en_US.ISO8859-1/books/fdp-primer/stylesheets.html, but they should be used exclusively for its Docbook XML.

XSLT's stylesheet needs to be a part of automating of tabbing and stripping of spacing outside of element tags for .txt and other formats.