Thank you for taking time to view our DISK BASED catalog. To view the

  catalog with MDA/HERC/CGA type  DT1 at the DOS PROMPT.  To view the

  catalog with EGA/VGA type DT2 at the prompt.  The EGA/VGA viewer auto

  scroling may be stopped at any time with the space bar or aborted with

  the ESCAPE key.  The   and  keys may be used to change the scroling

  FORWARD or BACKWARD.   The HERC/CGA viewer has ON-LINE instructions for

  viewing the catalog