fn

Use footnote (<fn>) to annotate text with notes that are not appropriate for inclusion in line or to indicate the source for facts or other material used in the text.

Footnote content is always skipped at the place where it was entered, and reproduced elsewhere, according to these rules:

Contains

( text data or ph or codeph or synph or filepath or msgph or userinput or systemoutput or b or u or i or tt or sup or sub or uicontrol or menucascade or term or xref or cite or q or boolean or state or keyword or option or parmname or apiname or cmdname or msgnum or varname or wintitle or tm or p or lq or note or dl or parml or ul or ol or sl or pre or codeblock or msgblock or screen or lines or fig or syntaxdiagram or imagemap or image or object) (any number)

Contained by

section, example, p, note, lq, sli, li, itemgroup, dd, figgroup, pre, lines, ph, stentry, entry, prereq, context, cmd, info, tutorialinfo, stepxmp, choice, choptionhd, chdeschd, choption, chdesc, stepresult, result, postreq, refsyn, proptypehd, propvaluehd, propdeschd, proptype, propvalue, screen, codeblock, pd

Inheritance

topic/fn

Attributes

Name Description Data Type Default Value Required?
callout Specifies what character is used for the footnote link, for example a number or an alpha character. Numbers are the default. You could also specify a graphic for the footnote callout during output processing. CDATA #IMPLIED No
%univ-atts; (%select-atts;, %id-atts;, translate, xml:lang) A set of related attributes, described at %univ-atts; parameter entity PE not applicable Not applicable
%global-atts; (xtrf, xtrc) A set of related attributes, described at %global-atts; parameter entity PE not applicable Not applicable
class, outputclass Common attributes described in Other common DITA attributes

Example

This markup:
The memory storage capacity of the computer is 
2 GB<fn callout="#">A GB (gigabyte) is equal to 
1 million bytes</fn> with error correcting support.
produces this output:
The memory storage capacity of the computer is 2 GB# with error correcting support.
Note: Footnote support may vary between different output types, depending on conventions and capabilities. For example, PDF output may lack support for the callout attribute, or footnotes may be collected as endnotes for certain types of Web publications.
A GB (gigabyte) is equal to 1 million bytes