First of all, i'm trying to set up custom page numbering. I've seen commands set-page-number, easy to understand, and set-page-number-macro, which i'm having problem with.
To set empty page style, i use <set-page-number-macro|>, but after, how to set another page style? Tried command page-nr, but the number is immediately substituted by 0, unable to dynamically adapts to current page.
The ideal would be to switch between roman, alpha etc, (i've seen number command).

Also, when writing table of contents, all kinds of sections are described, from sections to sub-paragraph. How is it possible to select which kinds of sections to display?

In a more general way, how to find list of commands and/or dynamic objects ? Are there any completions as in emacs (tried TAB, but works only in M-x mode) ?

Thanks for your help,
Fred