The number and any prefix word associated with, for example, the title or the caption of a Figure, such as “Figure 3.” or “Exhibit 2.”. This element is also used for the number or symbol used as a prefix character for a footnote and placed at the place of the footnote reference.
This element can be used to preserve the prefix number or label of an element, for example, for a reference or citation “25.” or “[Lapeyre 2002]”. This can be useful when reconstructing untagged cross references.
<!ELEMENT label (#PCDATA %label-elements;)* >
Any combination of:
<abstract> Abstract; <ack> Acknowledgments; <aff> Affiliation; <app> Appendix; <array> Array (Simple Tabular Array); <author-notes> Author Note Group; <boxed-text> Boxed Text; <chem-struct> Chemical Structure (Display); <chem-struct-wrapper> Chemical Structure Wrapper; <citation> Citation; <corresp> Correspondence Information; <def-item> Definition List: Definition Item; <def-list> Definition List; <disp-formula> Formula, Display; <fig> Figure; <fig-group> Figure Group; <fn> Footnote; <graphic> Graphic; <list> List; <list-item> List Item; <media> Media Object; <note> Note in a Reference List; <notes> Notes; <ref> Reference Item; <sec> Section; <statement> Statement, Formal; <supplementary-material> Supplementary Material; <table-wrap> Table Wrapper; <table-wrap-group> Table Wrapper Group; <trans-abstract> Translated Abstract
Label for a figure:
<article> <front> ... </front> <body>... <p>Geriatric day hospitals developed rapidly in the United Kingdom in the 1960s as an important component of care provision. ... Although there is considerable descriptive literature on day hospital care,<xref ref-type="bibr" rid="B1">1</xref> concern has been expressed that evidence for effectiveness is equivocal and that day hospital care is expensive.<xref ref-type="bibr" rid="B2">2</xref> ...</p>... </body> <back>... <ref-list> <ref id="B1"><label>1</label> <citation citation-type="book"> <collab>Research Unit of the Royal College of Physicians and British Geriatric Society</collab> <source>Geriatric day hospitals: their role and guidelines for good practice.</source> <year>1994</year> <publisher-name>RCP</publisher-name> <publisher-loc>London</publisher-loc>. </citation> </ref> <ref id="B2">...</ref> ... </ref-list>... </back> </article>