rem: return (window.editorShell != null); 
add:   return (window.editorShell && !IsInHTMLSourceMode()); 
context:   isCommandEnabled: function(aCommand, dummy)  {    return (window.editorShell != null);  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/c17732f0f15ef5d18466e7036b5242d4c75e042b/ComposerCommands.js/clean/editor/ui/composer/content/ComposerCommands.js