Wrappers for URIs in plain text
===============================

This section does not formally form part of the URL specification.

URIs, including URLs, will ideally be transmitted though protocols
which accept them and data formats which define a context for them.
However, in practice nowadays there are many occasions when URLs are
included in plain ASCII non-marked-up text such as electronic mail
and usenet news messages.

In this case, it is convenient to have a separate wrapper syntax to
define delimiters which will enable the human or automated reader to
recognize that the URI is a URI.

The recommendation is that the angle brackets (less than and greater
than signs) of the ASCII set be used for this purpose.

These wrappers do not form part of the URL, are not mandatory, and
should not be used in contexts (such as SGML parameters, HTTP
requests, etc) in which delimiters are already specified.

Example
-------

   Yes, Jim, I found it under <ftp://info.cern.ch/pub/www/doc> but
   you can probably pick it up from <ftp://ds.internic.net/rfc>.

From:
<https://www.w3.org/Addressing/URL/5.1_Wrappers.html>