WYSIWYG

What You See Is What You Get (WYSIWYG)

WYSIWYG implies a user interface that allows the user to view something very similar to the end result.

Snippet from Wikipedia: WYSIWYG

In computing, WYSIWYG ( WIZ-ee-wig), an acronym for What You See Is What You Get, is a system in which editing software allows content to be edited in a form that resembles its appearance when printed or displayed as a finished product, such as a printed document, web page, or slide presentation. WYSIWYG implies a user interface that allows the user to view something very similar to the end result while the document is being created. In general, WYSIWYG implies the ability to directly manipulate the layout of a document without having to type or remember names of layout commands.