Documenting FSF copyright assignment process

[Konstantin Kharlamov <hi-angel@yandex.ru>]

I was wondering about that off-list, and I was asked to create a new 
topic about that.

I recently went through the signing procedure, and one thing I didn't 
like which can be improved: the specific steps up to sending a mail to 
assign@gnu.org are not documented. In my case I had to send a private 
mail to Eli asking for the assignment form, he sent it back to me along 
with further instructions; then I filled the form and sent it to 
assign@gnu.org.

This is a roundtrip that takes time for both maintainer and a user. 
Additionally, users are not even sure if what they're doing is correct, 
e.g. look at the last "assignment"-titled mail on this list, it starts 
with "I'm not sure if it's the right place to ask this". Yes, neither 
was I! That only adds  up confusion and frustration (which is likely 
already there because you can't "just contribute" like with other FOSS 
projects). Even more so when one has social communication problems, 
which I think is not that rare among scientists/developers.

It would really help if the emacs documentation about assignment¹ has 
either α) a paragraph with the form to be sent to assign@gnu.org and 
according instructions, or β) if it has to be documented on another 
site, e.g. FSF's, it would help to put a link to emacs documentation¹ 
after the words "Copyright assignment is a simple process." (and I hope 
that this would-be referred documentation includes α; preferrably with 
any legal notes — if there will be any — moved somewhere at the 
bottom).

1: 
https://www.gnu.org/software/emacs/manual/html_node/emacs/Copyright-Assignment.html#Copyright-Assignment