Dossier demonstrates the different ULC widgets. 
It presents a list of customers. New customers can be added and
existing ones can be edited. 

It demonstrates:
- lazy loading of tables
- lazy loading of notebooks
- page books to dynamically change the user interface
- form models access the data stored in the forms
- tables, in-place editing
  

To run it, type:
run

Note, the commands in the Edit pop-up menu don't do anything.