[Ohrrpgce] SVN: teeemcee/13120 plotdict: add <gloss> elements and Glossary, and define ancestor/descend

[subversion at HamsterRepublic.com]

teeemcee
2022-09-12 20:50:09 -0700 (Mon, 12 Sep 2022)
176
plotdict: add <gloss> elements and Glossary, and define ancestor/descendent/slice tree

<gloss> items and links to them are styled differently from <commands>, and are
simpler.
---
U   wip/docs/htmlplot.xsl
U   wip/docs/plotdict.xml
U   wip/docs/plotdictionary.html