fragref

The fragment reference (<fragref>) element provides a logical reference to a syntax definition fragment so that you can reference a syntax fragment multiple times, or pull a large section of syntax out of line for easier reading. This element is part of the DITA programming domain, a special set of DITA elements designed to document programming tasks, concepts and reference information.

Example

This markup example:
<syntaxdiagram frame="none">
 <title>CopyFile</title>
 <groupseq><kwd>COPYF</kwd></groupseq>
 <groupcomp><var>input-filename</var><kwd>*INFILE</kwd></groupcomp>
 <groupseq><var>output-filename</var><kwd>*OUTFILE</kwd></groupseq>
 <fragref href="#syntax/overlay"></fragref>
 <groupchoice><var>input-filename</var><kwd>*INFILE</kwd></groupchoice>
 <groupchoice><var>output-filename</var><kwd>*OUTFILE</kwd></groupchoice>
 <fragment id="overlay">
  <title>Overlay</title>
  <groupchoice><kwd>*OVERLAP</kwd><kwd>*Prompt</kwd></groupchoice>
 </fragment>
</syntaxdiagram>
produces the following output:
CopyFile

>>-COPYF--input-filename*INFILE--output-filename--*OUTFILE------>

>--| Overlay |--+-input-filename-+--+-output-filename-+--------><
                '-*INFILE--------'  '-*OUTFILE--------'

Overlay

|--+-*OVERLAP-+-------------------------------------------------|
   '-*Prompt--'

Contains

Doctype Content model
ditabase, topic, task, reference, concept, glossary ( 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 q or boolean or state or keyword or option or parmname or apiname or cmdname or msgnum or varname or wintitle or tm or data or data-about or foreign or unknown) (any number)

Contained by

Doctype Parents
ditabase, topic, task, concept, reference, glossary syntaxdiagram, synblk, groupseq, groupchoice, groupcomp, fragment

Inheritance:

+ topic/xref pr-d/fragref

Attributes

Name Description Data Type Default Value Required?
href A reference to a syntax diagram fragment element. The referenced fragment should be in the same diagram as the fragref element. The href attribute uses conventional URL syntax to point to the ID of the matching syntax diagram fragment:
href="#topicid/fragmentid"
CDATA #IMPLIED No
importance The attribute indicates whether this item in a syntax diagram is optional or required. Output processors may indicate this designation in a generated diagram. See this topic for more information on the conref value. optional | required | -dita-use-conref-target #IMPLIED No
props Root attribute from which new metadata attributes can be specialized. This is a property attribute which supports conditional processing for filtering or flagging. If no value is specified, but the attribute is specified on an ancestor within a map or within the related-links section, the value will inherit from the closest ancestor. The attribute takes a space delimited set of values. However, when acting as a container for generalized attributes, the content model will be more complex; that model is documented in the "attribute generalization" section of the DITA architectural specification. CDATA #IMPLIED No
base A generic attribute that has no specific purpose, but is intended to act as a base for specialized attributes that have a simple value syntax like the conditional processing attributes (one or more alphanumeric values separated by whitespace). The attribute takes a space delimited set of values. However, when acting as a container for generalized attributes, the content model will be more complex; that model is documented in the "attribute generalization" section of the DITA architectural specification. CDATA #IMPLIED No
platform Indicates operating system and hardware. This is a property attribute which supports conditional processing for filtering or flagging. If no value is specified, but the attribute is specified on an ancestor within a map or within the related-links section, the value will inherit from the closest ancestor. The attribute takes a space delimited set of values. CDATA #IMPLIED No
product Contains the name of the product to which the topic applies. This is a property attribute which supports conditional processing for filtering or flagging. If no value is specified, but the attribute is specified on an ancestor within a map or within the related-links section, the value will inherit from the closest ancestor. The attribute takes a space delimited set of values. CDATA #IMPLIED No
audience Indicates the intended audience for the element. This is a property attribute which supports conditional processing for filtering or flagging. If no value is specified, but the attribute is specified on an ancestor within a map or within the related-links section, the value will inherit from the closest ancestor. The attribute takes a space delimited set of values. CDATA #IMPLIED No
otherprops This attribute can be used for any other properties that might be needed to describe an audience, or to provide selection criteria for the element. This is a property attribute which supports conditional processing for filtering or flagging. If no value is specified, but the attribute is specified on an ancestor within a map or within the related-links section, the value will inherit from the closest ancestor. The attribute takes a space delimited set of values. CDATA #IMPLIED No
rev Indicates revision level of an element. It is useful for flagging outputs based on revision. If no value is specified, but the attribute is specified on an ancestor within a map or within the related-links section, the value will inherit from the closest ancestor. CDATA #IMPLIED No
status The status of the current element. new | changed | deleted | unchanged | -dita-use-conref-target #IMPLIED No
%id-atts; (id, conref) A set of related attributes, described at %id-atts; parameter entity PE not applicable Not applicable
%localization-atts; (translate, xml:lang, dir) A set of related attributes, described at %localization-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