const char _config_xml_[] = "config.xml";
const char _name_[] = "name";
const char _description_[] = "description";
const char _author_[] = "author";
const char _license_[] = "license";
const char _icon_[] = "icon";
const char _content_[] = "content";
const char _feature_[] = "feature";
const char _preference_[] = "preference";
const char _width_[] = "width";
const char _height_[] = "height";