The mailing list and archive are provided as a public service by the University of Washington, which assumes no responsibility for the contents or accuracy of the messages therein. The subject of this mailing list is the email and newsreading program Pine . Do not send messages on unrelated matters to the list. Before sending a question to the mailing list, check whether it was already asked by using the archives' searchable index. No mater what the author sends, the client should be able to translate it into plain text if they so desire.
User agents are free to support whatever stylesheet commands they want.
For the sake of portability, I favor an extreamly reduced flavor of some mark-up language. Tables are still the standard but not recommended. Nesting of tables is not supported.