Using Windows 10 and latest version of Mozilla Thunderbird when typing text in my e-mails I can switch from any language to any language (using Dutch, English, French, German or Arabic or Farsi) just depending in my Windows keyboard selection. However when typing numeric fields, Thunderbird only shows "Arabic characters like 0,1,2,3......7,8,9) but I can't find a way to display the "hindi" characters for those digits. Please advise as to what I do wrong Thanks in advance for the cooperation.