Major mode and implementation of expected editing facilities

[Daniele Nicolodi <daniele@grinta.net>]

Hello,

is there somewhere an annotated list of the standard editing facilities
that a major mode is expected to implement or that it may be useful to
implement?

I'll try to explain what I mean with an example. I'm writing a major
mode to edit a form of structured data. The information in the file is
logically grouped into sections. Thus I thought that setting
fill-paragraph-function to something that would correctly indent one
such section would make sense so that fill-paragraph (M-q) would do the
right thing. Is that something desirable? Where can I find a list of
other hooks that would make sense to implement?

If such list does not exist what would be a good starting point to
compile it?

Thank you.

Cheers,
Dan