Q: Hi, would you kindly explain what is not above the fold?
A: Above the fold is a graphic design term that was coined from the Newspaper industry. It is the concept that the most important news or most appealing content is located at the top to entice people to go further. “Above the fold” refers to the part of a web page that is immediately visible when a visitor loads that page. This is the content of the page that can be seen without scrolling the page. The fold for 1024×768 monitor is on average 578 pixels down from the top of a webpage.
In turn, the space that is not above the fold is anything you have to scroll down to see. If there is no scrolling involved to view what you are trying to view, than that content is considered above the fold.
For more details visit: Above the fold – Wikipedia