NAME
    SetRast - Set an entire drawing area to a specified color.

SYNOPSIS
    SetRast( rp, pen )
             a1  d0

    void SetRast( struct RastPort *, UBYTE );

FUNCTION
    Set the entire contents of the specified RastPort to the
    specified pen.

INPUTS
    rp - pointer to RastPort structure
    pen - the pen number (0-255) to jam into bitmap

RESULT
    All pixels within the drawing area are set to the
    selected pen number.

BUGS

SEE ALSO
    RectFill() graphics/rastport.h