PENCIL

        [GREG1\]PENCIL [N|*] [/COLOUR C] [/DASHED D] [/WEIGHT W] [/DEFAULT]

    PENCIL selects the current pen or changes the pen attributes.

    Command argument:
      - with a pen number, select this pen as the current one and optionally
        changes its attributes if options are present.
      - with a * wildcard, modify the named attributes of all  pens  without
        changing the current pen number.
      - without argument, only modify the current pen attributes.

    Attributes  are  defined  in  terms of colour, dashed pattern and weight
    (thickness). Up to 16 pens can be defined (0-15). Most plotting commands
    use the current pen. The major exception is RGMAP (iso-contouring) which
    uses the pen 0 (solid and foreground color by default)  and  15  (dotted
    and  blue by default). Some commands also ignore the dashed patterns, in
    particular all labels and the BOX command.
      - The dashed pattern D must be in range 1 to 8, 1 means solid lines.
      - The weight factor W must be a weight number or value.  See  subtopic
        /WEIGHT for details.
      - The  colour  index C is a color number or name. See subtopic /COLOUR
        for details.

    PENCIL N /DEFAULT reset default attributes of pen number N.  PENCIL /DE-
    FAULT  reset default attributes for all Pens, as defined at program ini-
    tialization.