(1) A conceptual two-dimensional surface in storage on which data for a portion of the display surface is represented.
(2) The display data buffer associated with a partition. The size of the presentation space is defined as equal to, or larger than, the size of the viewport. When the presentation space is equal to the viewport size, all the data in the presentation space is displayed. When the presentation space is larger than the viewport, the user must move the scrolling window within the presentation space to display the data within the viewport. See also scrolling window, viewport.
(3) A portion of the device's buffer storage, allocated to a partition, that contains only display data that CICS sends to that partition. See also partition.