2>
<h3>Description</h3>
<p>Sets a property if a target file or set of target files is more up-to-date
than a source file or set of source files. A single source file is specified
using the <code>srcfile</code> attribute. A set of source files is specified
using the nested <code>&lt;srcfiles&gt;</code>
elements. These are <a href="../Types/fileset.html">FileSet</a>s,
whereas multiple target files are specified using a nested
<a href="../Types/mapper.html"><code>&lt;mapper&gt;</code></a> element.</p>
<p>By de