Point
1. <unit, text> (Sometimes abbreviated "pt") The unit of length for text characters.
There are six slightly different definitions: Truchet point, Didot point, ATA point, TeX point, Postscript point, and IN point.
The most commonly used are ATA in the USA and Didot in Europe.
A twip is 1/20 of a PostScript[?] point.
Different point systems (http://www.vakcer.com/oberon/dtp/fonts/point.htm).
(2002-03-10)
2. <hardware> To move a pointing device so that the on-screen pointer is positioned over a certain object on the screen such as a button in a graphical user interface.
In most window systems it is then necessary to click a (physical) button on the pointing device to activate or select the object.
In some systems, just pointing to an object is known as "mouse-over" event which may cause some help text (called a "tool tip" in Windows) to be displayed.
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