Unescape

It is necessary to unescape escaped data in order to recover the data. Escaping is a mechanism that uses a special pattern of data (the escape character or sequence) to indicate that the data following it should be interpreted specially (i.e., unescaped).

URLs:

IETF Draft RFC, IIIR Working Group, Hypertext Markup Language (HTML)

This RFC describes the current practice and proposals for future standardization of HTML.

Computer Communications Glossary

This site from Hayes, (as in Hayes modems) explains various communications terms.

W3E References:

character entity

URL-encoded text

Detail:

Examples include the "+++" escape sequence required to switch Hayes-compatible modems to command mode, the VT100 or ANSI escape sequences used to control text terminals, and the & escape used to introduce HTML character entity references. The HTML ">" character entity reference is unescaped to the '>' character.