I wrote:
You are right, my goal was to describe all insets, but the BibTeX, Glossary, and External-Inset is missing. I'll add this when I find the time.
I'll only add the description of the external insets, the BibTeX, glossary, and index stuff will remain in Extened.lyx.
I like the naming proposal "Embedded Objects" because this describes what e.g. graphics are. Only "Objects" says as much as only "Insets" I think. Can I rename it?
regards Uwe