<xref>

Mandatory attributes:

1. @rid

2. @ref-type

Appears in	Frequency
<article-title>	Zero or more times
<attrib>	Zero or more times
<contrib>	Zero or more times
<p>	Zero or more times
<td>	Zero or more times
<th>	Zero or more times
<trans-title>	Zero or more times
<sec>	Zero or more times
<verse-line>	Zero or more times

Cross-reference element used to relate and/or create a link with information in the text. The mandatory attributes for xref are:

• @rid: contains the element identifier of the referenced article, thus making the link between the origin (@rid) and destination (@id) in the text.

• @ref-type: specifies the type of cross-reference whose values can be:

Value	Description
aff	affiliation
app	appendix
author-notes	authors notes
bibr	bibliographic references
boxed-text	text box
contrib	contributor
corresp	corresponding author
disp-formula	formula
fig	figura or figure group
fn	footnotes
sec	section
supplementary-material	supplementary material
table	table or table group
table-fn	table footnotes

Examples:

• Example of <xref> in <article-meta>:

• Example of <xref> in <p>:

• Example of <xref> related to a figure in the text:

• Example <xref> without content:

Example of <xref> in <article-meta>:

...
<article-meta>
    ...
    <contrib-group>
        <contrib contrib-type="author">
            <name>
                <surname>Lacerda</surname>
                <given-names>Marcus Vale</given-names>
            </name>
            <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <aff id="aff1">
            <label>1</label>
            <institution content-type="orgname">Universidade do Estado do Amazonas</institution>
            <country country="BR">Brazil</country>
            <institution content-type="original">Universidade do Estado do Amazonas, Manaus, AM, Brasil</institution>
        </aff>
        ...
    </contrib-group>
    ...
</article-meta>
...

Example of <xref> in <p>:

...
<p>
  ...
   <xref ref-type="bibr" rid="B13">John 2003</xref>
   ...
</p>
...

Example of <xref> related to a figure in the text:

<p>Check in <xref ref-type="fig" rid="f01">Figure 1</xref></p>
...
<p>
    <fig id="f01">
        <caption>
            <title>Environmental <italic>in situ</italic> conditions during the study period.</title>
        </caption>
        <graphic xlink:href="image.tif"/>
    </fig>
</p>

Example <xref> without content:

...
<article-meta>
  ...
  <contrib-group>
    <contrib contrib-type="author">
      <name>
          <surname>Broering</surname>
          <given-names>Laurent Wiliam</given-names>
      </name>
      <xref ref-type="aff" rid="aff1"/>
    </contrib>
  </contrib-group>
  <aff id="aff1">
    <institution>Fundação Getúlio Vargas</institution>
    <institution content-type="orgdiv1">EAESP</institution>
    <country country="BR">Brazil</country>
    <institution content-type="original">Fundação Getúlio Vargas - FGV-EAESP, Av. 9 de Julho, 2029, Bela Vista, 01313-902, São Paulo, SP, Brazil.</institution>
  </aff>
...

Note

• Do not include <xref> in <sup>.