procedure SetScrollRegion(aTopRow, aBottomRow : Integer);
Sets the scrolling region.
A scrolling region is a range of lines (from aTopRow to aBottomRow) within which writes to the screen and scrolling are restricted. This is often used for adding status lines that remain visible on screen while other text in the Terminal is scrolled.
Calling SetScrollRegion will automatically activate the new scrolling region.
See also: UseScrollRegion