RFC (Request For Comment). Numbered
Internet standards use this quixotic name. The
people have a fetish about not changing a document once it has been published. It
never gets marked obsolete. There are never any forward references in it to its
replacements or additions. You have to scan all the RFCs (Request For Comments)
looking for relevant ones and sort out manually which ones are still valid. It is a
highly error-prone procedure. What they are doing is akin to a hazing ritual.
Presumably, there is somewhere a proper index to help you avoid obsolete
and find related ones. In the meantime, here is my mini-list of
I have found interesting. Sometimes the older obsolete RFCs
are easier to understand, even if they are dated. They can be useful to get a
general drift before you plunge into a newer, more lawyerly specification.