Characters otherwise not allowed in a URL SHALL be escaped using
the %nn notation, and ARE handled this way in the 2.0 WWW library
server and client.
This is is not just a suggestion! :-)
> I have previously suggested that we use the %nn (eg %32) syntax for
> characters in search strings. (See my message to www-talk,
> "Handling + in document searches") In reposonse to this note TimBL
> this would be implemented in the next version of the WWWLibrary. I
> certainly like to see this (or something giving equivalent
> documented in the HTTP documentation.