note sundialsvc4 <p> It is my understanding that the names should agree because Perl looks for module-files by matching the file name. &nbsp; It reads whatever it finds, of course <em>expecting</em> that the desired package-name will be defined thereby. </p><p> However, the formal purpose of the <tt>package</tt> directive is to introduce a <em>namespace,</em> and once Perl has been cajoled into reading a source-file, it will of course recognize all of the package (namespace) names found therein. &nbsp; Sometimes there are very good, even compelling, reasons to do just that ... for instance, when you are defining grammars for [mod://Parse::RecDescent] (and I don&rsquo;t know offhand if it is strictly necessary ...), or when you simply have a group of classes that you know will always be used together to help one another out. </p> 1014776 1014776