Book Interchange Tag Suite (BITS) Version 1.0 Tag Library Version 1.0

<ext-link>

External Link

Link to an external file or resource.

Remarks

Use the standard XLink attributes to provide a live link to the external source.

The @ext-link-type attribute can be used to give an indication of the type of resource to which the external link points. While this Tag Set does not constrain the values of this attribute, and ordinary text is acceptable, the suggested values include:

ec

Enzyme nomenclature. See http://www.chem.qmw.ac.uk/iubmb/enzyme/

gen

GenBank identifier

genpept

Translated protein-encoding sequence database

highwire

HighWire Press intrajournal

pdb

Protein data bank. See http://www.rcsb.org/pdb/

pgr

Plant gene register. See http://www.ebi.ac.uk/~textman/pgr-htdocs/pgr/

pir

Protein Information Resource. See http://pir.georgetown.edu

pirdb

Protein Information Resource. See http://pir.georgetown.edu

pmcid

PubMed Central identifier

pmid

PubMed identifier

sprot

Swiss-Prot. See http://www.ebi.ac.uk/swissprot/

aoi

Astronomical Object Identifier

doi

Digital Object Identifier

ftp

File transfer protocol

uri

Website or web service

Attributes

ext-link-type Type of External Link
id Document Internal Identifier
specific-use Specific Use
xlink:actuate Actuating the Link
xlink:href Href (Linking Mechanism)
xlink:role Role of the Link
xlink:show Showing the Link
xlink:title Title of the Link
xlink:type Type of Link
xml:base Base
xml:lang Language
xmlns:xlink XLink Namespace Declaration

Related Elements

<self-uri> is used when a book or book component is available in multiple forms, for example, as a means of indicating the online version of a print book or book part. Conversely, a URI that indicates a journal article, a companion book, or any other kind of external reference is usually tagged with <ext-link>. <uri>, although allowed everywhere <ext-link> is used, is more typically part of an address, information concerning a contributor, or part of a reference citation. Loosely put, an external link <ext-link> is intended to act as a link; a URI <uri> makes no promises but identifies a URI, such as a URL, when it is present in the text of an address or a citation; and <self-uri> points to another form of the same book or book part (such as the PDF version of an online HTML eBook).

The address element <email> is allowed as part of a paragraph as well as inside an address. There are two ways to treat an email address in text: as an <email> element or as an <ext-link> element. If both a textual phrase (“the Moody Institute’s email address”) and a mailto URL are required, the <ext-link> element should be used.

The elements used in an address include the address class elements: <addr-line>, <country>, <fax>, <institution>, <institution-wrap>, and <phone> and the address linking class elements: <email>, <ext-link>, and <uri>.

Content Model

<!ELEMENT  ext-link     (#PCDATA %ext-link-elements;)*               >

Expanded Content Model

(#PCDATA | email | ext-link | uri | inline-supplementary-material | related-article | related-object | hr | bold | fixed-case | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | strike | underline | underline-start | underline-end | ruby | alternatives | inline-graphic | private-char | chem-struct | inline-formula | tex-math | mml:math | abbrev | index-term | index-term-range-end | milestone-end | milestone-start | named-content | styled-content | fn | target | xref | sub | sup | x)*

Description

Any combination of:

This element may be contained in:

<abbrev>, <address>, <addr-line>, <aff>, <alt-title>, <anonymous>, <array>, <article-title>, <attrib>, <award-id>, <bold>, <book-title>, <book-volume-id>, <book-volume-number>, <chapter-title>, <chem-struct>, <chem-struct-wrap>, <code>, <collab>, <comment>, <compound-kwd-part>, <conf-acronym>, <conf-loc>, <conf-name>, <conf-num>, <conf-sponsor>, <conf-theme>, <contrib>, <contrib-group>, <copyright-statement>, <corresp>, <def-head>, <degrees>, <disp-formula>, <disp-formula-group>, <edition>, <element-citation>, <email>, <etal>, <ext-link>, <fax>, <fig>, <fig-group>, <fixed-case>, <funding-source>, <funding-statement>, <given-names>, <gov>, <graphic>, <index-entry>, <inline-formula>, <inline-supplementary-material>, <institution>, <issue>, <issue-part>, <issue-title>, <italic>, <kwd>, <label>, <license-p>, <media>, <meta-name>, <meta-value>, <mixed-citation>, <monospace>, <named-content>, <nav-pointer>, <on-behalf-of>, <overline>, <p>, <part-title>, <patent>, <phone>, <prefix>, <preformat>, <product>, <publisher-loc>, <publisher-name>, <related-article>, <related-object>, <role>, <roman>, <sans-serif>, <sc>, <see>, <see-also>, <see-also-entry>, <see-entry>, <self-uri>, <series>, <sig>, <sig-block>, <source>, <speaker>, <std-organization>, <strike>, <string-conf>, <string-date>, <string-name>, <styled-content>, <sub>, <subject>, <subtitle>, <suffix>, <sup>, <supplement>, <supplementary-material>, <surname>, <table-wrap>, <table-wrap-group>, <target>, <td>, <term>, <term-head>, <th>, <title>, <toc-div>, <toc-entry>, <trans-source>, <trans-subtitle>, <trans-title>, <underline>, <unstructured-kwd-group>, <uri>, <verse-line>, <volume>, <volume-id>, <volume-series>, <volume-title>, <xref>

Example 1

An empty <ext-link> element for which content will be generated:

    
...
<p>... The highest 16S rDNA sequence similarity  
value of 98&amp;amp;#x0025; was obtained for the 
<italic>D. maris</italic> 16S rDNA sequence (GenBank 
accession no. <ext-link ext-link-type="gen"
xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="Y18883"/>)
and for the <italic>D. maris</italic> DSM 43672<sup>T</sup>
16S rDNA sequence (GenBank accession no. <ext-link
ext-link-type="gen" xmlns:xlink="http://www.w3.org/1999/xlink"
xlink:href="X79290"/>) ...</p>
...

Example 2

An <ext-link> element with content; no text will be generated. The content is @xlink:href attribute, repeated:

 
...
<fig id="f1" orientation="portrait" position="float">
<label>FIG. 1.</label>
<caption>
<p>(a) Schematic of the working principles of HFM, (b) a typical application
scheme for an electric bias in HFM, (c) regulation the conformations and
dynamics (trapping, concentration, and sudden stretching) of λ-DNA molecules
in HFM, and (d) schematic of the trapping location regulation (enhanced online).
[URL: <ext-link ext-link-type="uri" xlink:href="http://dx.doi.org/10.1063/1.4762852.1">
http://dx.doi.org/10.1063/1.4762852.1</ext-link>]
<alternatives>
<media id="v1" mime-subtype="avi" mimetype="video" orientation="portrait"
position="anchor" specific-use="original-format" xlink:href="v1">
<object-id pub-id-type="doi" specific-use="metadata">10.1063/1.4762852.1</object-id>
</media>
<media mime-subtype="mpeg" mimetype="video" orientation="portrait"
position="anchor" specific-use="archival-format" xlink:href="v1"></media>
<media mime-subtype="x-flv" mimetype="video" orientation="portrait"
position="anchor" specific-use="online-format" xlink:href="v1"></media>
</alternatives>
</p>
</caption>
<graphic orientation="portrait" position="float" xlink:href="f1"/>
<graphic id="f1a" orientation="portrait" position="float" xlink:href="dummy1.png"/>
<graphic id="f1b" orientation="portrait" position="float" xlink:href="dummy2.png"/>
<graphic id="f1c" orientation="portrait" position="float" xlink:href="dummy3.png"/>
<graphic id="f1d" orientation="portrait" position="float" xlink:href="dummy4.png"/>
</fig>
...

Example 3

The <ext-link> element used for email, with content given:


...
<contrib-group>
<contrib contrib-type="author">
<name name-style="western">
<surname>Nüsslin</surname>
<given-names>Fridtjof</given-names>
<prefix>Dr.</prefix>
</name>
</contrib>
<aff>Klinik für Strahlentherapie und Radiologische Onkologie,
<institution>Technische Universität München</institution>, 
Munich, Germany (Tel: 49-89-41404517, E-mail:
<ext-link ext-link-type="email" xlink:href="mailto:nuesslin@lrz.tum.de">
nuesslin@lrz.tum.de</ext-link>)</aff>
</contrib-group>
...

Example 4

    
...
<p>In the mid-1990s, the GenBank database became part of the 
International Nucleotide Sequence Database Collaboration with 
the EMBL database (<ext-link xmlns:xlink="http://www.w3.org/1999/xlink"
ext-link-type="uri" xlink:href="http://www.ebi.ac.uk/">European
Bioinformatics Institute</ext-link>, Hinxton, United Kingdom) and 
the Genome Sequence Database (GSDB; LANL, Los Alamos, NM).
Subsequently, the GSDB was removed from the Collaboration (by
the National Center for Genome Resources, Santa Fe, NM), and
<ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.ddbj.nig.ac.jp/">DDBJ</ext-link> (Mishima, 
Japan) joined the group. ...</p>
...

Book Interchange Tag Suite (BITS) Version 1.0 Tag Library Version 1.0

Version of December 2013