OBO productID and documentID for id and doi

For OBO, values for element identifiers (the id attribute) and DOIs (the doi attribute) require a productID of obo and a documentID derived from the entry manuscript.

//metaItem/@predicate="product"

Calculate the values as follows:

The productID is obo
Capture the documentID from the top of the entry manuscript.
An OBO documentID consists of the parent bibliography ISBN (without dashes) followed by a dash and a unique four digit number, for example, 9780195390155-0021

The doi attribute on the root document element has the format

10.1093/obo/documentID

Calculate the other id attributes according to the general instructions (see related links).

OBO DOIs on the root document element do not contain an elementCode, unlike most other OUP content which uses the code 016 for document. However, elementCodes are still used for all elements below the document level. The guidance given in the DOI values page for General DOI formats (see "Related concepts" below) applies to all OBO DOIs apart from the document DOI.

Examples showing unique four digit number following the ISBN


      <document doi="10.1093/obo/9780195390155-0009" id="obo-9780195390155-0009">
        <textMatter><!-- Content skipped for brevity -->
        </textMatter>
      </document>


      <div1 id="obo-9780195390155-0009-div1-0001"><!-- Content skipped for brevity --></div1>


      <div1 id="obo-9780195390155-0009-div1-0002"><!-- Content skipped for brevity --></div1>


      <bibList id="obo-9780195390155-0009-bibList-0001">
        <p><!-- Content skipped for brevity --></p>
      </bibList>