All of Shunn's stuff looks good to me. I think it's a somewhat dated piece--like mentioning fonts coming with printers--and seems to ignore the idea that much of his advice is set as default in Word and most other word processors.
Can't argue with that, but I'll stick with it because it makes sense even though it's dated.
And not a word about tossing in pound signs. Or, for that matter, setting off citations and quotes...which is one way of approaching the note or letter inclusions. I still away word on who is telling the people (here and elsewhere) to use pound signs.
By pound signs I assume you are referring to what I am used to calling a hash sign #. Shunn says this:
If you want a line break to appear in your story, then rather than leaving
a blank line in your manuscript you should center the character "#" on a
line of its own. Do this for every line break, not just for ones that fall at the top or bottom of a page or might otherwise be ambiguous
Much less using breaks after every POV shift.
I'm still confused over this POV shift business, I must know it by a different name. Can you tell me what a POV shift is?