Your profile folder contains a <a id='prefs-user-js-link'>user.js file</a>, which includes preferences that were not created by &brandShortName;.
Mae eich ffolder profil yn cynnwys <a id='prefs-user-js-link'>ffeil user.js</a>, sy'n cynnwys dewisiadau sydd heb eu creu gan &brandShortName;.