What is the act of moving the top portion of the document off the screen as text is typed?

The act of moving the top portion of the document off the screen as text is typed is known as "scrolling." This process allows users to view and interact with different parts of a document without losing track of their current position. Scrolling can be vertical or horizontal, depending on the layout of the content. It enhances usability by enabling continuous editing and reading of lengthy texts.