Driver parameters:

SCR=19
  The screensize of your Monitor.
  The value should be set to 90 if you are using PC-DRAFT Release 2.3.
  Otherwise, instead of small text only a box will appear on the screen.

DISK=C
  This parameter specifies the disk drive for storing the display list.
  The driver can handle all type of drives including RAM drives.
  Using a RAM drive improves the performance of the driver.

COUNT=-1
  This parameter specifies the count of Vectors up to which a real delete
  in the display list takes places. If the number of Vectors exceeds this
  value, black vectors are added to the display list. This results in 
  faster operation but has the disadvantage of creating a larger display
  list. The value -1 means only real delete is done.


