DISPLAY COMMANDS
  ----------------

  .R          DISPLAY REGISTERS (PC,F,A,X,Y,SP)
  .M  ADDR    DISPLAY MEMORY ( 8 BYTES BEGINNING AT ADDR )


  ALTER COMMAND (:)
  -----------------
  .:  DATA      ALTERS PREVIOUSLY DISPLAYED ITEM OR NEXT ITEM


  PAPER TAPE I/O COMMANDS
  ------------------------

  .LH                   LOAD HEX TAPE
  .WB ADDR1 ADDR2       WRITE BNPF TAPE (FROM LOW ADDR1 TO HIGH ADDR2)
  .WH ADDR1 ADDR2       WRITE HEX TAPE (FROM LOW ADDR1 TO HIGH ADDR2)

  CONTROL COMMANDS
  ----------------

  .G                    GO, CONTINUE EXECUTION FROM CIRRENT PC ADDRESS

  .H                    TOGGLES HIGH-SPEED-READER OPTION
                          (IF ITS ON, TURNS IT OFF; IF OFF, TURNS ON