add: case "cmd_newlist": 
context:   supportsCommand: function(command)  {    switch (command) {      case "cmd_selectAll":      case "cmd_delete":      case "button_delete":      case "button_edit":        return true;      default:        return false;    }  },
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/48185cb8554fbc252821a984faa1f805d21605e5/abCommon.js/clean/mailnews/addrbook/resources/content/abCommon.js