Viewport is a widget-based open-source Ajax start page similar to Netvibes, Pageflakes, Protopage, Google Personalized, My Yahoo, and Windows Live.

A display window in the Unreal Editor that can show a front, side, top, or perspective views. For more information on Virewports, see the UnrealEdInterface document.

For View objects, the viewport is a rectangular subregion of NDC space that specifies where the View object will be placed when drawn. The precise meaning of the viewport depends on the View object. For example, for XyPlot objects, the viewport specifies where the grid containing the curves will be placed, and the labeling (if any) will be drawn outside of the viewport. On the other hand, for TextItem objects, the viewport will be a rectangle surrounding the text string.

1. n. A predefined part of the display space. 2. n. In the 3270 Information Display System, an area on the usable area of the display surface through which an operator views all or a portion of the data outlined by the window on the presentation plane.

a subset of the area defined by a virtual display

The portion of the drawing plane of a sheet's medium that is visible on a display device.

A data structure that specifies an area of the screen for the display of a specified bitmap and its bit settings.

A method for viewing a full size terminal or reader screen with the display. You see only a limited number of lines and characters of data at one time. Use the display as a viewport to move around and see the entire screen.