Identifier unique to the application that indicates it is Firefox or Thunderbird, etc. Same for all installations of an application regardless of the value of <var>appName</var>
An t-aithnichear àraidh aig an aplacaid a dh'innseas gur ann aig Firefox no Thunderbird no rud mar sin a tha e. Co-ionnann aig gach stàladh de dh'aplacaid ge be dè an luach a tha aig <var>appName</var>