COMMENT ⊗   VALID 00002 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	________________________________________INPUT OUTPUT COMMANDS
C00006 ENDMK
C⊗;
________________________________________INPUT OUTPUT COMMANDS
  I      INPUT TELEVISION IMAGE FROM DISK FILE.
 αI      INPUT  CONTOUR  FILM  FROM DISK FILE.
  O      OUTPUT TELEVISION IMAGE FROM DISK FILE.
 αO      INPUT  CONTOUR  FILM  FROM DISK FILE.
  X      OUTPUT VIDEO IMAGE ON XGP.
  P      OUTPUT CALCOMP DISK FILE.
 εCm n	 XGP RAW  CONTOUR EDGE DATA. CUT AT m n  ETC.

____________________________________IMAGE CONTOURING COMMANDS
   C   CUT AT GIVEN THRESHOLD LEVELS.
   Q   CUT AT EQUALLT SPACED CONTOURS; THREE CUTS: 20, 40, 60.
  αQ   SEVEN CUTS: 10, 20, 30, 40, 50, 60, 70.
   J   CONTRAST ENHANCEMENT.

______________________________________NODE FOLLOWING COMMANDS
 +       FETCH FILM NODE.
 !       FLUSH NODE DISPLAY.
 , .     CW,,CCW         ...RING LINKS.
 < >     DAD,,SON        ...TREE OF RINGS.
         TYPE,,RELLOC
 ∪ ∩     ENDO,,EXO       ...NESTED POLYGON TREE.
 ≤ ≥     ALT,,NCNT       ...SHAPE,,0
 ⊂ ⊃     NGON,,PGON      ...NESTED POLYGON TREE.
 ∨ ∧     NTIME,,PTIME    ...TIME LINE LINKS.

____________________________________WINDOW SCROLLING COMMANDS
  ;      MOVE CAMERA LEFT.
  :      MOVE CAMERA RIGHT.
  (      MOVE CAMERA DOWN.
  )      MOVE CAMERA UP.
  -      ZOOM OUT, SHRINK IMAGE.
  *      ZOOM IN,  EXPAND IMAGE.
 αZ      RESET SCROLLING WINDOW.
  /      HALVE STRENGTH OF SCROLLING DELTA.
  \      DOUBLE STRENGTH OF SCROLLING DELTA.

________________________________________CART DRIVING COMMANDS
  F      DRIVE FORWARDS.
  B      DRIVE BACKWARDS.
  L      TURN WHEELS HARD LEFT.
  R      TURN WHEELS HARD RIGHT.
  αL     PAN CAMERA LEFT.
  αR     PAN CAMERA RIGHT.
  SPACE  STOP CART.
  RETURN EXIT CART COMMAND MODE.

____________________________________CART HARDWARE DIAGONOSTIC
  V          ENTER DIAGONOSTIC LISTEN LOOP.
  RETURN     EXIT DIAGONOSTIC LISTEN LOOP.
  NUMERALS:   0,1,2,3,4,5,6,7  SEND DIRECTION RELAY BITS.
  CHARACTERS: H,A,B,C,D,E,F,G  SEND ACTION RELAY BITS.