Thanks All,

On Fri, 2009-01-16 at 21:55 +0100, Carsten Senger wrote:

> 
> Sure you can have specialized fields that subclass from Field, TextLine, 
> or another base class. E.g. RegistrationNumber(TextLine) that takes care 
> to validate the input for a special format. But you use them in an 
> interface class, not the class that implements the interface.
> 

Okay. I got this down now.  I still have a problem with understanding
the use cases for using attribute=Object(schema=IMySchema ...

But now all of the docs may make mmore sense with all I've leearned to
past few days.

Cheers,
Tim

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