PLASMA/doc/Editor.md

WELCOME TO THE PLASMA EDITOR!
=============================

FIRST THINGS FIRST:
TO NAVIGATE, USE THE ARROW KEYS.  ON THE
APPLE ][:

    CTRL-K = UP
    CTRL-J = DOWN.

TO JUMP AROUND THE TEXT FILE USE:

    CTRL-W = JUMP UP
    CTRL-Z = JUMP DOWN
    CTRL-A = JUMP LEFT
    CTRL-S = JUMP RIGHT

    CTRL-Q = JUMP BEGINNING
    CTRL-E = JUMP END

THE 'ESCAPE' KEY WILL PUT YOU IN COMMAND
MODE.  FROM THERE YOU CAN EXIT BY
ENTERING 'Q' AND 'RETURN'. YOU CAN ALSO
RETURN TO THE EDITOR BY JUST PRESSING
'RETURN'.

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THE PLASMA EDITOR IS A SIMPLE TEXT
EDITOR FOR ENTERING AND MANIPULATING
TEXT AND SOURCE CODE FILES.  THE EDITOR
ONLY SUPPORTS 40 COLUMN TEXT ALTHOUGH
LINES CAN BE UP TO 79 CHARACTERS LONG.
THE  SCREEN WILL SCROLL HORIZONTALLY
AS THE CURSOR MOVES. THERE IS 16K OF
MEMORY FOR THE TEXT BUFFER.

IT HAS TWO MODES, COMMAND AND EDIT.

  EDIT COMMANDS:

    LEFT ARROW  = MOVE CHAR LEFT
    RIGHT ARROW = MOVE CHAR RIGHT
    UP ARROW    = MOVE LINE UP
    DOWN ARROW  = MOVE LINE DOWN
    CTRL-K      = MOVE LINE UP
    CTRL-J      = MOVE LINE DOWN
    CTRL-A      = JUMP LEFT
    CTRL-S      = JUMP RIGHT
    CTRL-W      = JUMP UP
    CTRL-Z      = JUMP DOWN
    CTRL-Q      = JUMP BEGIN
    CTRL-E      = JUMP END
    CTRL-D      = DELETE CHAR
    CTRL-X      = DELETE LINE
    CTRL-V      = COPY DELETED LINE
    CTRL-O      = OPEN NEW LINE
    CTRL-F      = OPEN A FOLLOWING NEW LINE
    CTRL-T      = JOIN LINES
    CTRL-I      = TOGGLE INSERT/OVERWRITE
    ESCAPE      = SWITCH TO COMMAND MODE

  APPLE ][ FEATURES:

    SHIFT-M   = ]
    CTRL-N    = [
    CTRL-P    = _
    CTRL-B    = |
    CTRL-Y    = ~
    CTRL-L    = SHIFT LOCK
    SHIFT-LEFT ARROW = DELETE (SHIFT-MOD)

  WITH THE SHIFT-KEY MOD ON AN
  APPLE ][, UPPER AND LOWER CASE
  ENTRY WORKS AS EXPECTED.

    CTRL-C    = FORCE LOWER-CASE CHARS

  IF YOU HAVE A LOWER-CASE CHARACTER
  GENERATOR INSTALLED, YOU CAN FORCE
  LOWER-CASE DISPLAY.  OTHERWISE,
  UPPER CASE WILL BE DISPLAYED NORMALLY
  BUT lower-case will be displayed in
  inverse.  This is the default.

  Apple //e AND //c FEATURES:

  THE 'CLOSED-APPLE' KEY WILL MODIFY
  THE ARROW KEYS INTO THEIR JUMP
  EQUIVALENTS. IT WILL ALSO MODIFY
  THE 'RETURN' KEY TO OPEN UP A LINE,
  JUST LIKE CTRL-F.

  COMMAND MODE:

    <REQUIRED PARAMETER>
    [OPTIONAL PARAMETER]

    Q            = QUIT
    R <FILENAME> = READ FILE
    W [FILENAME] = WRITE FILE (OPTIONAL FILENAME)
    A [FILENAME] = APPEND FILE
    C [PREFIX]   = CATALOG FILES
    P <PREFIX>   = SET PREFIX
    H [SLOT]     = HARDCOPY TO DEVICE IN SLOT (DEFAULT 1)
    N            = CLEAR TEXT IN MEMORY
    E            = EDIT MODE
    'RETURN'     = EDIT MODE