As a reminder, the deadline for comments on the Beta version of EAD3 is October 1st. So please submit your comments in the next two weeks!
Structured <did> Elements
We have updated a number of <did> elements to improve their data models, making them more structured and hopefully more consistent.
<origination> and <repository>
In EAD 2002, both of these elements accept mixed content, both text and various elements. In EAD3 they will not contain mixed content, rather a choice of elements. They will be able to contain one or more of <corpname>, <famname>, <name>, or <persname>. <repository> will have an optional (zero or one) <address> element. Both will have an optional <depscriptivenote> element. Because <corpanme>, <famname>, <name>, and <persname> now all consist of one or more <part> lements, the <subarea> element in <repository> and <corpname> has been deprecated.
<unitdatestructured> and <unitdate>
In order to better model the complexity of dates, including single dates, date ranges, and combinations thereof, we have created a new element called <unitdatestructured>. This elelement will allow one of the following: <datesingle> (for single dates), <daterange> (for date ranges), or <dateset> (for some combination of two or more <datesingle> and <daterange> elements. This will allow for much more precise normalization and processing of dates.
However, in order to provide a migration path for existing dates which do not follow the model provided in <unitdatestructured>, we will be keeping the <unitdate> element as an unstructured alternative.
In EAD 2002, <langmaterial> is a mixed content element where one can include a <langugae> element, though none is required. In EAD3, <langmaterial> will have a more tightly structured model. It will contain one or more of the following: <language> (for recording the language used in the materials being described), or <languageset>, which wraps both <language> and <script>. In EAD 2002, script is an attribute on <language>. Moving <script> to an element allows us to capture instances where one language is written in mutlipe scripts and where multiple languages are written in the same script. The <langmaterial> element will also have an optional <descriptivenote> element for textual notes regarding languages.
The final structured <did> element is <physdescstructured>, which I will describe in my next - and final! - EAD revision highlights email.
For now, remember to submit your comments!