Twip

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A twip (derived from TWentieth of an Inch Point) is a typographical measurement, defined as 1/20 of a typographical point. One twip is 1/1440 inch or 17.639 µm when derived from the PostScript point at 72 to the inch, and 1/1445.4 inch or 17.573 µm based on the printer's point at 72.27 to the inch.

[edit] Twips in computing

Twips are the default unit of measurement in Visual Basic (version 6 and earlier, prior to VB.NET). When in Microsoft Windows "small fonts" mode, 15 twips are equal to one pixel. One centimetre is equal to 566.928 twips.

Twips are a commonly used unit with Symbian OS bitmap images and are also used internally in SWF format.

Besides, twips are also used in Rich Text Formatting from Microsoft for platform-independent exchange.