... but should point to 'Properties' page.

I couldn't find anything on Ctrl - F, Ctrl - Shift - F and Ctrl - , I think the last two do the same thing, but its hard to tell as there is no label on the search field.

Either way they should be mentioned in the Shortcuts section.

and it doesn't seem to be in the TOC.

The info about optional pins is not very helpful. Possible values in the configure inspector are optional and hidden (apart from visible)

I cannot read the difference between those two and the explanation hardly makes it clearer.
Also: when is it a good idea to use a hidden pin, which is not visible and cannot be activated in the inspector?

from https://thegraybook.vvvv.org/reference/hde/keyboard-shortcuts.html