[Zope] How to prime a selection?

[Loren Stafford]

> Hi all
> 
> I'm making a document class for a warehouse of papers.
> It's based on ZCatalogAware and ObjectManager (to wrap
> mainly PDFs and DOCs), and has fields:
> 
>   title   (string type)
>   origin  (string type)
>   format  No value for format_value.  
>   type    No value for type_value.  
> 
> "format" and "type" are selections -- 
> 
> 1. where do I supply their initial values (filling in 
>    'format_value' and 'type_value')?
> 2. is it possible to let a field offer presets and 
>    previously entered values, but to allow users to 
>    add new ones, which are remembered and offered to 
>    subsequent users?
> 
> A RTFM-type answer to question 1. is perfectly OK, though a 
> page reference would be sorely appreciated.

http://www.zope.org/Members/lstaffor/zProperties