metadata question

Hi all,

While looking at the proposal for the processing expectations for both <metadata> and custom namespaces, I got a question regarding <metadata>:

Can a <metadata> element have two or more <meta> elements that have the same value for the 'type' attribute?

For example:

<metadata>
 <meta type='myType'>My value 1</meta>
 <meta type='myType'>My value 2</meta>
</metadata>

I'm asking because this has implications for the implementations (e.g. can some type of hash-map be used or not).

I would go for NOT allowing duplicated type values, to keep things simple.

Cheers,
-yves