PDP-8 MORSE KEYBOARD COMMAND SUMMARY
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MORSE CHARACTERS: 
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        A-Z     SEND LETTER 
        0-9     SEND NUMBER 
        ,./?    SEND PUNCTUATION
        SPACE   PAUSE FOR WORD SPACE
        #       SEND AS (.-...) 
        $       SEND AR (.-.-.) 
        &       SEND SK (...-.-)
        "       SEND ERROR CODE (........)
  
TRANSMIT BUFFER EDITING:
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        ^E      ERASE ALL CHARACTERS IN BUFFER
        RUBOUT  ERASE PREVIOUS WORD IN BUFFER OR SEND ERROR CODE
  
  
SPEED CONTROL:
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        ^F      SEND 25 PERCENT FASTER
        ^S      SEND 25 PERCENT SLOWER
  
INPUT PRINTBACK CONTROL:
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        ^I      ECHO CHARACTER WHEN INPUT (TYPED) 
        ^O      ECHO CHARACTER WHEN OUTPUT (SENT) 
        ^N      DO NOT ECHO CHARACTERS
        ^M      LOCAL RETURN TO LEFT MARGIN (CR-LF) 
        RETURN  SAME AS ^M
  
OPERATION MODE CONTROL: 
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        ^T      TRANSMIT (IGNORE RECEIVER)
        ^R      RECEIVE (BUFFER KEYBOARD INPUT) 
        ^X      TRANSCIEVE
        ^D      DUPLEX