$plugin = 'foo';

    if ( -e $plugin . ".pm" )
    {
       #load plugin, import it into main scope.
       my $fileContents = &readFile( $plugin . ".pm" );
       eval( $fileContents );
       if ( $@ )  { handlePluginLoadError($@); exit; }
  
       # The following three functions _MUST_ be defined
       # by the plugin which has been loaded.  Could test
       # they are present via symbol table introspection 
       # to be sure, I guess.
       &pluginInit( "foo" );
       &pluginProcess( "bar" );
       &pluginTerminae( "baz" );

       # Unload those functions so that they may be
       # reloaded without duplication warnings
       undef( &pluginInit );
       undef( &pluginProcess );
       undef( &pluginTerminate );
    }