Diagram.contentAlignment:
Diagram.position:
Diagram.scale:
Diagram.fixedBounds (x, y, width, height):
Diagram.padding (top, right, bottom, left):
Diagram.autoScale:
(but no greater than CommandHandler.defaultScale)
A Diagram's Diagram.contentAlignment property determines how parts are positioned when the Diagram.viewportBounds width or height is different than the Diagram.documentBounds width or height.