rem: return prefObj.CopyCharPref (prefName); 
add: return prefObj.getCharPref (prefName); 
context: function getCharPref (prefObj, prefName, defaultValue){    var e;        try    {        return prefObj.CopyCharPref (prefName);    }    catch (e)    {        return defaultValue;    }}
meta: 3298	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3298/fb40a907ab670c83ecbab9f81c45c2a56bfecd02/test3-readprefs.js/buggy/xul/tests/test3-readprefs.js