<fn>
The <fn>
element is a footnote used to annotate text with notes
that are inappropriate for inline inclusion. It is also used to indicate the source for facts or
other material used in the text.
@id
attribute is a single-use
footnote. Upon output, it generates a number as a superscript "callout" that is linked
to the placement of the footnote, such as at the bottom of the immediate printed page or at the
end of an online article. If a character is specified in the @callout
attribute
for the footnote, that character should be used as the superscript "callout" that is linked to
the placement of the footnote.@id
attribute is a use-by-reference
footnote. Upon output, it does not appear anywhere unless it has been referenced using
an <xref>
with the @type
attribute set to "fn". @id
attribute, so it uses the behavior from the first bullet above.<fn>
element creates a local copy
of the footnote with an id of "thisid"; that local copy is then referenced by the
<xref>
element.The details of footnote processing and styling are implementation and/or stylesheet
dependent. For example, a tool that renders DITA as PDF may lack support for the
@callout
attribute, or footnotes may be collected as endnotes for certain types
of publications.
See appendix for information about this element in OASIS document type shells.
- topic/fn
<fn>
element, with no @id
and no @callout
attribute. In that case, markup such as the
following:The memory storage capacity of the computer is 2 GB<fn>A GB (gigabyte) is equal to 1000 million bytes</fn> with error correcting support.may produce output similar to the following:
The memory storage capacity of the computer is 2 GB1 with error correcting support.
......
1 A GB (gigabyte) is equal to 1000 million bytes
----- [bottom of page] -----------------------------------------------------------------
@callout
attribute. It is marked up as
follows:The memory storage capacity of the computer is 2 GB<fn callout="#">A GB (gigabyte) is equal to 1000 million bytes</fn> with error correcting support.That DITA markup may produce output similar to the following:
The memory storage capacity of the computer is 2 GB# with error correcting support.
......
# A GB (gigabyte) is equal to 1000 million bytes
----- [bottom of page] -----------------------------------------------------------------
@id
on a
footnote, and then references that @id
multiple times. The DITA markup looks like
this:I like pets. <fn id="reuse-fn">This is the name of an animal.</fn> At my house, I have a dog<xref href="#topic/reuse-fn" type="fn"/>, a cat<xref href="#topic/reuse-fn" type="fn"/>, and a llama<xref href="#topic/reuse-fn" type="fn"/>.and may produce output similar to the following:
I like pets. At my house, I have a dog1, a cat1, and a llama1.
......
1This is the name of an animal.
----- [bottom of page] -----------------------------------------------------------------
The following attributes are available on this element: Universal attribute group, outputclass, and the attribute defined below.
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