> Why is it that <daogrp> cannot contain <dao> (it is meant to be a group of
> <dao>'s)?

I still have problems getting my head round some of the extended
linking stuff, but I think  <daogrp> is rather meant to be a group
of <daoloc>s (and other locators), in the same way that <linkgrp> is
a container for the other sorts of of (non-<daoloc>) locators
(<ptrloc>, <extptrloc>, <refloc>, <extrefloc>)

The XLink draft spec at

http://www.w3.org/TR/WD-xlink#xlg

says:

> A linking element for an extended link contains a series of child
> elements that serve as locators. Because an extended link can have
> more than one remote resource, it separates out linking itself from
> the mechanisms used to locate each resource (whereas a simple link
> combines the two).

and has the following example of an out of line extended link

<commentary xml:link="extended" inline="false">
     <locator href="smith2.1" role="Essay"/>
     <locator href="jones1.4" role="Rebuttal"/>
     <locator href="robin3.2" role="Comparison"/>
</commentary>

I think that in EAD <daogrp> and <linkgrp> would be the
functional equivalent of <commentary> and the <locator>s would
be <daoloc>, <ptrloc>, <extptrloc>, <refloc> or <extrefloc>.

Pete
====================================================
Pete Johnston (Effective Records Management Project)
Archives & Business Records Centre
University of Glasgow
77-81 Dumbarton Road
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