Background images

One of the new features needed when enabling the creation of custom schematics was the ability to draw a new set of curb-lines.  Intersection Magic supports this by having a "background image" that can be designated for any schematic.  A side benefit of this is that if you have digital images or CAD drawings of your intersections that are suitable for replacing the default curb-lines at a specific location, you can use them as your background image.  The dialog box for specifying this is Diagram / Schematic / Properties.  You must be in "design mode" to make this change to a schematic.  Extra!  You can also set the lightness and contrast for the images so that you don't have to re-save these images if you already have them on disk.