<mathmlref>
Use the <mathmlref>
element to reference a non-DITA XML document
that contains MathML markup. This element enables you to use the markup by reference.
<math>
element. The reference can
be one of the following:- A URI that addresses an XML document; the XML document has a MathML
<math>
element as the root element - A URI that addresses an XML document and contains a fragment identifier that is the
XML ID of a
<math>
element within the document
Processors SHOULD process the MathML
as though the <m:math>
element had occurred directly in the content
of the containing <mathml>
element.
The reference can be direct, using the @href
attribute, or indirect, using
the @keyref
attribute. For indirect referencing, specify only the key name.
Specify the ID of the <mathml>
element
as part of the value for the @href
attribute on the key definition.
<math>
element with the
@id
of "equation-02" within a larger document using a key reference, you
would define the key in the following
way:<keydef keys="mathml-equation-02" href="math/mathml-equations.xml#equation-02" format="mathml" />You would refer to this key using just the key name:
<mathml> <mathmlref keyref="mathml-equation-02"/> </mathml>
Content models
See appendix for information about this element in OASIS document type shells.
Inheritance
+ topic/xref mathml-d/mathmlref
Example
Here is a reference to a <mathml>
element that is the root element
of its containing document:
<equation-block> <mathml> <mathmlref href="../mathml-source/mathml-root-mathml.mml"/> </mathml> </equation-block>
<math>
element sets the MathML namespace as the default namespace,
so there are no namespace prefixes on the MathML
markup:<?xml version="1.0" encoding="UTF-8"?> <math xmlns="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <mstyle displaystyle="false" scriptlevel="0"> <mrow> <mfrac> <mrow> <mi mathcolor="gray">sin</mi> <mo rspace="verythinmathspace"></mo> <mi>θ</mi> </mrow> <mi>π</mi> </mfrac> </mrow> </mstyle> </math>
Here is a reference to a specific <math>
element in a containing XML
file:
<equation-block> <mathml> <mathmlref href="../mathml-source/mathml-equation-library.xml#mathfrag-02" /> </mathml> </equation-block>
<?xml version="1.0" encoding="UTF-8"?> <root> <part> <math id="timeinday" xmlns="http://www.w3.org/1998/Math/MathML"> <mi>x</mi> </math> <math id="mathfrag-02" xmlns="http://www.w3.org/1998/Math/MathML"> <math> <mrow> <mi>y</mi> <mo>=</mo> <mn>5</mn> <mi>x</mi> <mo>+</mo> <mn>2</mn> </mrow> </math> </math> </part> <part> <m:math id="mathfrag-03" display="inline" overflow="scroll" xmlns:m="http://www.w3.org/1998/Math/MathML"> <m:mi>y</m:mi> <m:mo>=</m:mo> <m:mi>m</m:mi> <m:mi>x</m:mi> <m:mo>+</m:mo> <m:mi>b</m:mi> </math> </part> </root>
Attributes
The following attributes are available on this element: Universal attribute group, outputclass, and @keyref
. This element
also uses @href
, @scope
, and a narrowed definition of
@format
(given below) from Link relationship attribute group.
@format
- Specifies the format (data type) of the referenced
resource. For MathML the format should be "mml", which is the default value for
@format
on this element.