sentinel(redirected from The Sentinel (newspaper))
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Computing a character used to indicate the beginning or end of a particular block of information
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
Symbol marking the beginning or end of an element of computer information such as an item or a tape.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.