My two part question pertains to LyX.
How do you create a new "Environment" ("Paragraph Style") for LyX's Environment drop-down list (Standard, Itemize, Enumerate, Chapter, Section, Subsection, Quote, Lyx-Code, etc.)?
How do you create a new "Text Style" (LyX top menubar > Edit > CharStyle:Code, CharStyle:Emph, Etc, "CharStyle:NewTextStyleHere")?
I would like to use, eg, the Book(KOMA-script) Document Class, but be able to add to it (1) new Environments (say, eg, a "SubSubparagraph" style, and (2) new Text Styles (say, eg, a "DiminishedFontSize" text style). This would greatly extend the usability of a document class within LyX.
The first part of my question is very similar, if not identical, to Dave Jarvis's question on page: Create new paragraph style in LyX
Jarvis provides a good example of the kinda of step-by-step instructions that he and I are looking for in an answer. Thank you.