<!-- ================================================================= -->
<!-- dirline DTD

    This is the Current DTD which NLM has written for
     external use.

    Comments and suggestions are welcome.
     2004/02/26

 -->
<!-- ================================================================= -->
<!ENTITY auml  "&#228;">
<!ENTITY ouml  "&#246;">
<!ENTITY uuml  "&#252;">
<!ELEMENT dirline (DOC)+>
<!ELEMENT DOC ((DOCNO|Organization|AbstractText|Acronym|
Address|City|Country|
Email|EntryMonth|Fax|
Holdings|Keyword|LastReviewDate|
LimitedUseNotes|MeshHeading|OtherSite|
Publications|Region|SponsoringAgency|
State|Telephone|Telephone800|
TypeOfOrganization|URL|ZipCode)*)>
<!ELEMENT DOCNO (#PCDATA)>
<!ELEMENT Organization (#PCDATA)>
<!ELEMENT AbstractText (#PCDATA)>
<!ELEMENT Acronym (#PCDATA)>
<!ELEMENT Address (#PCDATA)>
<!ELEMENT City (#PCDATA)>
<!ELEMENT Country (#PCDATA)>
<!ELEMENT Email (#PCDATA)>
<!ELEMENT EntryMonth (#PCDATA)>
<!ELEMENT Fax (#PCDATA)>
<!ELEMENT Holdings (#PCDATA)>
<!ELEMENT Keyword (#PCDATA)>
<!ELEMENT LastReviewDate (#PCDATA)>
<!ELEMENT LimitedUseNotes (#PCDATA)>
<!ELEMENT MeshHeading (#PCDATA)>
<!ELEMENT OtherSite (#PCDATA)>
<!ELEMENT Publications (#PCDATA)>
<!ELEMENT Region (#PCDATA)>
<!ELEMENT SponsoringAgency (#PCDATA)>
<!ELEMENT State (#PCDATA)>
<!ELEMENT Telephone (#PCDATA)>
<!ELEMENT Telephone800 (#PCDATA)>
<!ELEMENT TypeOfOrganization (#PCDATA)>
<!ELEMENT URL (#PCDATA)>
<!ELEMENT ZipCode (#PCDATA)>