Thanks brf, I have seen parts of that document before, I think, but never in such a complete form.
As you will see below I am looking for an explanantion from the other direction (as well): what is the
meaning of particular panels in the Permissions part of the ACP.
A question: I am trying to make a user the (standard) moderator of a series of forums under a single category.
(I am no longer sure if I should be saying, a series of sub-forums under a single top-level forum . . .).
The page "setting_mod_local" (see browser address field) suggests that in the
lower of the two panels "Select a Forum" you can do this in one shot by selecting the category.
It does not seem to work for me?
Am I missing something ?
A comment (probably not your fault

): the page "view_user-global" must win the prize for the most weird design !
I do not understand why the subpanels are labelled "Manage users" and "Look up user". They are almost the same - except that the number of users displayed in "Manage users" is a fraction of the total number; at least on my system - why's that ?
Hope you have the time/patience to help me out.