osely related to the internal implementation of the XSLT processor.
  The current extension element mechansim is designed for the Xalan-Java Interpretive processor. It does not work with XSLTC.</LI>
  <LI>The <A href="extensions.html#supported-lang">xalan:component and xalan:script</A> extension elements are not supported at the moment. This has
  the implication that you cannot use scripting languages (e.g. javascript) with XSLTC.</LI>
  <LI><A href="extensionslib.html#sql">The SQL extension</A> is not sup