A need has been demonstrated, and
a number of requirements have been
stated for uniform resource locators
(URLs). A scheme has been proposed
which builds on existing conventions
to define a syntax for URLs. This
scheme has been in serious use by
World-Wide Web (W3) initiative since
1991. Adoption of the scheme in
correspondence, standards and software
will ease the use of references to
on-line information in a flexible
way as the coming information age
arrives.