Scrolls up a portion of the current screen (a set of contiguous rows)
#include <nwconio.h>
int ScrollScreenRegionUp (
int firstLine,
int numberOfLines);
(IN) Specifies the row number of the first row in the set. The top row of the screen is 0.
(IN) Specifies the number of rows in region (in set).
The following table lists return values and descriptions.
This function scrolls a portion of the screen up. (The top line of the region is replaced by the next-to-the-top line. The next-to-the-top line is replaced by the line below it, and so on. Finally, the bottom line of the region is cleared.) All of the lines on the screen that are not in the defined region are not affected.