live preview - Computer Definition
(1) An LCD screen on a digital camera that is viewed to frame and shoot pictures, not just display them after they have been taken. See viewfinder.
(2) A view of the final version of a document. Most applications automatically provide a live preview. As you make changes to the data on the page with regard to fonts, colors, placement, etc., the changes occur in real time. However, some applications offer a live preview mode that lets users quickly see how the changes would look before applying them. See WYSIWYG.