code>public function testMacroCommandExecute():void</code><p>
     Tests operation of a <code>MacroCommand</code>.
     
     <P>
     This test creates a new <code>Notification</code>, adding a 
     <code>MacroCommandTestVO</code> as the body. 
     It then creates a <code>MacroCommandTestCommand</code> and invokes
     its <code>execute</code> method, passing in the 
     <code>Notification</code>.<P>
     
     <P>
     The <code>MacroCommandTestCommand</code> has defined an
     <code>initializeMacroCo