From: nospam@needed.invalid   
      
   On Sun, 2/15/2026 8:53 AM, J. P. Gilliver wrote:   
   > As I type (e. g. in this compose window in Thunderbird, or in a webform   
   > - but not, I've just checked, in Notepad!), words mis-spelt are   
   > underlined in wiggly red; I presume this is something built-in to   
   > Windows 10.   
   >   
   > Right-clicking on such a word brings up a menu, including suggestions   
   > and also Add To Dictionary.   
   >   
   > I've always been wary of such, in case I add something that was just a   
   > genuine mistype, as I don't know where the dictionary is nor how to edit   
   > it. Anyone know?   
   >   
   > (I've just discovered that right-clicking on the word after adding - as   
   > I just did with "webform" above - provides an Undo Add To Dictionary   
   > option. But of course that will only work straight after the adding, not   
   > much later, as for example might happen when you added a genuine   
   > mis-spelling you thought was right and only much later discover wasn't.)   
   >   
      
   I got the hint on what to look for, from an MS Blog entry -- "spellcheck".   
      
   MsSpellCheckingHost.exe used by Notepad.exe   
      
   C:\Users\username\AppData\Roaming\Microsoft\Spelling\neutral\default.dic   
   C:\Users\username\AppData\Roaming\Microsoft\Spelling\en-US\default.exc   
      
   C:\Windows\Globalization\ELS\SpellDictionaries\MsSp7en-US.dub   
   C:\Windows\Globalization\ELS\SpellDictionaries\MsSp7en-US.lex   
      
   *******   
      
   Thunderbird and Firefox have a third-party package (hunspell?). Pan NewsReader   
   also uses Hunspell.   
      
      "You can copy the two dictionary files (xx-XX.aff and xx-XX.dic) to the   
       dictionaries folder in the Firefox program folder (C:\Program   
   Files\Mozilla Firefox\)."   
      
   That gives me   
      
      C:\Program Files\Mozilla Firefox\dictionaries\en-US.aff    3,074 bytes   
      C:\Program Files\Mozilla Firefox\dictionaries\en-US.dic  576,688 bytes   
      
   The "Personal dictionaries" could be somewhere in the bigger (user) profile   
   folder, but I cannot find them at the moment. I tried to use Procmon   
   to spot them, but didn't get a ReadFile event I needed.   
      
      Paul   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)