1) in inverted mode, the shape is transparent but the area surrounding the shape is
colored - it effectively punches a heart-shaped (or circle-shaped or diamond-shaped, etc.)
hole in the shapes bounding rectangle. You can control the margins of the bounding
rectangle via the Inverted Shape Margins... option on the Shapes menu.
2) in outline mode, the outline of the shape is colored, but the interior is not. You
can control the thickness of the outline via the Border Thickness... option on the
Shapes menu.
