Command: scroll
  
Syntax: 
  include graphics.e 
  scroll(i1, i2, i3)
  
Description: 
  Scroll a region of text on the screen either up (i1 positive) or
  down (i1 negative) by i1 lines. The region is the series of lines
  on the screen from i2 (top line) to i3 (bottom line), inclusive.
  Anew blank line will appear at the top or bottom.
  
Example Program: 
 see bin\ed.ex

See Also: 
  clear_screen, text_rows
  
