OPTION SIMULATE platform
   - Enables (limited) compatibility with other MMBasic platforms.
   - platform can be one of:  "MMB4L", "MMBasic for Windows", "MMB4W",
     "Colour Maximite 2", "CMM2", "PicoMiteVGA", "Game*Mite" and only
     needs to be quoted for the "MMBasic for Windows" and "Game*Mite"
     cases due to restrictions caused by tokenisation.

GRAPHICS BUFFER id, width, height
   - Creates an off-screen buffer surface.
   - Note that surface 0 cannot be a buffer.
GRAPHICS CLS id [, colour]
   - Clears a surface.
GRAPHICS COPY src_id TO dst_id [, when] [, transparent]
   - Copies one surface to another (c.f. PAGE COPY on the CMM2).
GRAPHICS DESTROY { id | ALL }
   - Destroys a surface.
GRAPHICS INTERRUPT id, {interrupt|0}
   - Sets or clears the interrupt handler for a window surface.
GRAPHICS LIST
   - Lists all surfaces.
GRAPHICS SPRITE id, width, height
   - Creates a sprite surface.
   - Note that all graphics primitive commands can be used on sprite
     surfaces; this is different to other MMBasics.
   - Note that surface 0 cannot be a sprite.
GRAPHICS TITLE id, title$
   - Sets the title of a window surface.
GRAPHICS WINDOW id, width, height [, x] [, y] [, title$] [, scale]
                [, interrupt]
   - Creates a window surface.
   - Note that surface 0 can (only) be a window.
GRAPHICS WRITE { id | NONE }
   - Sets the surface to direct other graphics commands to
     (c.f. PAGE WRITE on the CMM2)