I use firefox as a browser and mozillathunderbird AS EMAIL under windows 10. The use is very limited because the help pages of Firefox or Thunderbird open again and again, e.g. when I click a link that refers to the provider's website or webshop. All possibilities have been exhausted by me so that I ask for help. Would be helpful if I get an answer to my questions at rainer@krueger2017.eu Thank you very much