History: -Z-order

Source of version: 4 (current)

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__Z-Order__ - The term "Z-order" refers to the order of objects along the Z-axis. In coordinate geometry, X typically refers to the horizontal axis (left to right), Y to the vertical axis (up and down), and Z refers to the axis perpendicular to the other two (forward or backward). One can think of the windows in a GUI as a series of planes parallel to the surface of the monitor. The windows are therefore stacked along the Z-axis, and the Z-order information thus specifies the front-to-back ordering of the windows on the screen.

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!!See also
* http://en.wikipedia.org/wiki/Z-order

History: -Z-order

Source of version: 4 (current)

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