saxon.expr">Expression</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Value.BOOLEAN</DL>
</DD>
</DL>
<HR>

<A NAME="simplify()"><!-- --></A><H3>
simplify</H3>
<PRE>
public <A HREF="../../../../com/icl/saxon/expr/Expression.html" title="class in com.icl.saxon.expr">Expression</A> <B>simplify</B>()
                    throws <A HREF="../../../../com/icl/saxon/expr/XPathException.html" title="class in com.icl.saxon.expr">XPathException</A></PRE>
<DL>
<DD>Simplify and validate.
<P>
<DD><D