Any TEI light document could be included in ADL provided that it has metadata in sourceDesc, such as:
<sourceDesc xml:id="idm140462580906160">
<bibl xml:id="idm140462580905904">
<author n="1" xml:id="idm140462580905040">
<name xml:id="idm140462580904608">
<surname xml:id="idm140462580904480">Munch-Petersen</surname>,
<forename xml:id="idm140462580904064">Gustaf</forename>
</name>
</author>
<title xml:id="idm140462580903520">Samlede skrifter</title>
<pubPlace xml:id="idm140462580903104">Valby</pubPlace>
<publisher xml:id="idm140462580902688">Borgen</publisher>
<date xml:id="idm140462580902224">1988</date>
</bibl>
</sourceDesc>
TEI documents pass through a number of procedures before entering ADL.
The @decls/bibl (ID/IDREF markup) are placed on elements regarded as described above.
The elements are adorned with @facs, @n and @xml:id attributes as needed.
Each element in the texts is then possible to use as an anchor for linking. The most important one is to add an xml:id attribute to each element in a document that has not got one to begin with. For building a cool service based on these documents, their names must never be changed, nor must the xml:id.
There are TEI elements that containers and those that are empty. When indexing we concentrate on the former, since they are the ones that we need to search. There are a very important class of empty elements called milestones, and the most important one is presumably page break, at least in a digitisation project (where we need to address facsimiles).