Scott,

Yes, I did play a role in the development of the Pronto software. Part of the Pronto UI is fixed by the system software, and part is described separately in what I call a configuration. A configuration defines the contents of all the control panels (panels are linked into a device or macro group) in terms of widget trees. The bitmaps that define a widget's appearance, the lists of actions associated with buttons and hard keys, and the actual IR codes are all defined in a configuration. Configurations can be downloaded and uploaded using the RS-232 port.