Other compilation units are built because of dependencies.
Fixed formatting errors in the dial-plan example.
Test routine.
To_String overrides an inherited operation.
Formatting.
Reordered functions.  Adjust exeption message, when an exception is raised inside Create.
Reordered functions.  Adjust exeption message, when an exception is raised inside Create.
Reordered functions.  Adjust exeption message, when an exception is raised inside Create.
Attach sensible error message to Constraint_Errors.
Report exceptions in Create functions on Standard_Error.  (Should be modified to exception messages later.)