Help for PRINTPIX

PURPOSE:
  "printpix" IS A PROGRAM TO PRINT FORMATTED PICTURES
  ON THE LINE PRINTER.  "printpix" READS THE INPUT PICTURE
  AND BUILDS THE OUTPUT BY TAKING THE AVERAGE OF THE INPUT
  SAMPLES WITHIN THE INC X INC SIZE BOX AND ASSIGNING THAT
  VALUE TO THE OUTPUT PICTURE CHARACTER.  SIMULTANEOUSLY,
  A LINEAR STRETCH AND/OR THE COMPLEMENT OPERATION IS
  PERFORMED ON EACH CHARACTER.
  IN ORDER TO CORRECT FOR THE PRINTER ASPECT RATIO,
  "printpix" DELETES EVERY 3RD AND 5TH OR JUST THE 5TH LINE
  ( FOR 6 OR 8 LINES RESPECTIVELY ) AND PRINTS A DOUBLE
  PRINTED CHARACTER ON THE LINE PRINTER CORRESPONDING TO
  THE PROPER DN VALUE FOR EACH SAMPLE IN THE LINE.
EXECUTION:
  The following is the execution statement for "printpix"
         printpix  INP  PARAMS
where INP and PARAMS are parameters discussed in their
respective parameter section in TUTOR mode.
WRITTEN BY: W. D. Benton	September 10, 1974
COGNIZANT PROGRAMMER: Joel A. Mosher	March 14, 1983
REVISION: New
          May 8, 1995        A. Scop  (CRI) Made portable for UNIX