In web authoring, an escape sequence is used to be able to use <,> or & in text without the browser misinterpreting these symbols for their html meaning.
Found on http://www.encyclo.co.uk/visitor-contributions.php
An escape sequence is a series of characters used to change the state of computers and their attached peripheral devices. These are also known as control sequences, reflecting their use in device control. Some control sequences are special characters that always have the same meaning. Escape sequences use an escape character to change the meaning
Found on http://en.wikipedia.org/wiki/Escape_sequence
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