/** @page libsbml-extending How to extend libSBML to support SBML packages

<p> This advanced section is directed at authors of SBML Level&nbsp;3 package
extensions for libSBML.  This section explains how a package extension can be
implemented.

@htmlinclude doxygen-regular-text-start.html
- @subpage libsbml-basics-of-extensions
- @subpage libsbml-howto-implement-extension
- @subpage libsbml-extension-support-classes
@htmlinclude doxygen-regular-text-end.html

*/
