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 :fn id=label.
 
The :fn tag starts a footnote. A footnote is one or more lines of text of
additional information about a word or phrase in a help panel. The footnote
must start with a :fn tag and end with a :efn tag.
 
Although a footnote is defined in a help panel, the footnote is not
displayed with the help panel. Instead, the user must request the footnote
by clicking on a footnote reference that specifies the footnote's label. The
system then displays the footnote in a separate pop-up window. The :fnref
tag is used to create footnote references.
 
Parameter  Description
────────────────────────────────────────────────────────────────────────────
 
id         Identifies the footnote. The label value can be a name,
           consisting of a combination of letters and digits, or an integer;
           label must be unique──that is, no other footnote may have the
           same label.
 
Comments
 
Although most tags can be used in a footnote, the heading (:h), footnote
(:fn and :efn), and index tags (:i1 and :i2) cannot be used.
 
Example
 
This example uses the :fn tag to create a footnote. The footnote label,
keylabel, is used later as a reference in a hypertext link.
 
    :fn id=keylabel.
    A key label is letter, digit, or other symbol that appears on
    a keyboard key.
    :efn.
       .
       .
       .
    Different keyboards may have different
    :hpt.key labels:ehpt.:fnref refid=keylabel.
 
See Also
 
 :efn, :fnref
 
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