Your comments

I would like to have PC-Outline formatting. PCOutline 3.34 is still out there, (pre-Grandview days).

Editing, one could break a line into a child or parent, and most-important, change the "numbering" style on the fly with A, A.1, A.2, A.2.i to I, I.A,II.A.b, etc.

Pictures of PC-outline at

danielsays.com/ss-gallery-dos-sw-pc-outline-334.html

Foldout from excessivelyproductive.com/Home.aspx is the only thing I can find that is similar in single-page, differential item numbering.