Adding MathML Support Using JEuclid
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By default, the JEuclid library is excluded from the Oxygen SDK artifact dependencies. To enable it, comment the following lines in the pom.xml file:
<exclusion>
    <artifactId>jeuclid-core</artifactId>
    <groupId>net.sourceforge.jeuclid</groupId>
</exclusion>

To edit specialized DITA Composite with MathML content, include the entire MathML2 framework directory (for example, the default location is: [OXYGEN_INSTALL_DIR]/frameworks/mathml2) in the frameworks bundled with the component in the bundle-frameworks module. This directory is used to solve references to MathML DTDs.