| <idno> | (identifying number) supplies any standard or non-standard number used to identify a
bibliographic item. | 
| Attributes: | | type | categorizes the number, for example as an ISBN or other
         standard series. |  |  | Datatype: CDATA |  |  | Values: A name or abbreviation indicating what type of identifying
         number is given (e.g. ISBN, LCCN). |  |  | Default: #IMPLIED | 
 | 
| Example | <idno type=ISSN>0143-3385
<idno type=OTA>116 | 
| Note |  | 
| Tagset | auxiliary tag set for TEI headers | 
| Class | biblPart | 
| Filename | teihdr2 | 
| Content: |  | 
| Parents | bibl biblStruct publicationStmt seriesStmt | 
| Children | #PCDATA | 
| Declaration | <!ELEMENT idno          - O  (#PCDATA)                          >
<!ATTLIST idno               %a.global
          type               CDATA               #IMPLIED       > | 
| See | 5.2.4  ;  5.2.5 ;  6.10.2.3 |