HPGL_PLOTTER::HPGL_PLOTTER()
{
    SetPenSpeed( 40 );      // Default pen speed = 40 cm/s; Pen speed is *always* in cm
    SetPenNumber( 1 );      // Default pen num = 1
    SetPenDiameter( 0.0 );
    SetPenOverlap( 0.0 );
}
HPGL_PLOTTER::HPGL_PLOTTER()
{
    SetPenSpeed( 40 );      // Default pen speed = 40 cm/s
    SetPenNumber( 1 );      // Default pen num = 1
}