The exrefrecord provides a space to encapsulate a wide range of information. In our example we provide three important pieces of information. First we indicate the format of the encapsulated data, in this case it is a PDF file. Secondly, we provide the location of the document. Finally, using a standard vocabulary, we provide the create date and an entry using the ISO 8601 format.
Description provides the location for indicating the name of the document.
Since we didn't have much in our first example, perhaps it would be helpful to provide additional information about the learner in our next iteration. We expand our example with the insertion of an Indentification segment to hold some basic identification data as directed by the learner. It is important to note that there is no need to keep information in LIP segments. If you wanted to mix and match information from different segments, that is your choice. The decision on the sequence and construction of the XML may be dictated by your particular application, but for illustration purposes, this structure works best.