The view above-the-fold is called the viewport

I always wondered what's the technical name for the area of the screen that is above-the-fold of the monitor. Actually I think the expression above-the-fold is jargon taken from the print world. In any case I stumbled across this definition from an online resource webreference.com.

The view above-the-fold is called the viewport. Here is the technical definition:
The canvas is a large flat space on which the document is rendered, and the viewport is the bit in your browser's window where the document appears. If the canvas is bigger than the viewport, only a part of the canvas will be visible at any time, and browser will usually allow you to scroll around the document using a scroll bar or something similar.