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tab stop[′tab ‚stäp]
A column position to which the printing mechanism of a typewriter or computer printer advances upon receipt of a command.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
tab stopA location on a horizontal line that marks the beginning of a column of text. With a monospaced font such as Courier, space characters can be used to line up columns of numbers and names evenly. However, when a proportional font is used such as Arial or Times Roman, the varying widths of letters require the use of preset tab stops for proper alignment. With typewriters, tab stops were mechanical elements that halted the movement of the carriage. In word processing, tab stops are numerical settings maintained by software. See tab.
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