This is a placeholder, I'll flesh it out eventually.
Exterior JAM9 is the new all-(most-?)purpose exterior door. It makes obsolete a large number of JAM8 doors, I don't know how many. Most of the 'basic' parameters (single/double, transom, leaf style, etc) which used to have separate door objects, are rolled into this one. Briefly, more later:
• Single or double
• Solid, french, or glazed-paneled leaf
• Side lights on either side, both, or not
• Transoms with various relationships to the door and side lights
The masonry and trim settings are very similar to the old doors, with greatly improved scale sensitivity in the profiles.
The JAM8 doors have been moved to 08a Doors/JAM8 Doors. They will continue to work. You 'shouldn't' need them. If a feature is missing in the new door, or if you encounter other problems, please let me know.