From: G6JPG@255soft.uk   
      
   On 2026/2/18 12:59:53, John C. wrote:   
   > On 26/02/15 05:53 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.   
   >   
   > No, it's not. indows 10 does not have a comprehensive, built-in   
   > dictionary app for looking up word definitions, though it includes a   
   > spell-check dictionary for autocorrect.   
      
   Oh, I wasn't expecting a full dictionary with definitions; it was just   
   that the behaviour when e. g. filling in a webform, and when composing   
   in Thunderbird, was so similar, that I thought they were using the same   
   software and file. But, as I've discovered in this thread, Thunderbird   
   at least is using its own dictionary. (I'm interested that you say   
   "indows 10" _does_ have one for autocorrect; where is it? And what uses   
   it? Not Notepad, as I discovered.)   
   []   
      
   > To edit your personal dictionary in Thunderbird, open a new message   
   > "Write" window, click "Spelling," and select "Edit" in the personal   
   > dictionary area to remove or add words.  Alternatively, close   
      
   Thanks - good to know that route!   
      
   > Thunderbird, locate the persdict.dat file in your profile folder (Help >   
   > More Troubleshooting Information > Open Folder), and edit it directly   
   > with a text editor.   
   >   
   > Methods to Edit Your Dictionary   
   >   
   > - Via the Compose Window (Easiest):   
   > 1. Click Write to start a new email.   
      
   Or if you have the compose window open anyway (I just tried it while   
   composing this).   
      
   > 2. Click the Spelling button in the toolbar (or right-click a word and   
   > select check spelling).   
   > 3. In the dialogue box, click Edit under the "Personal Dictionary" area.   
   > 4. You can then remove words or add new ones to your user dictionary.   
   >   
   > - Via the Profile Folder (Direct Edit):   
   > 1. Close Thunderbird entirely.   
   > 2. Go to the menu (≡) > Help > More Troubleshooting Information.   
   > 3. Under "Application Basics," click Open Folder (or "Show in Finder" on   
   > macOS).   
   > 4. Locate the file named persdict.dat.   
   > 5. Open this file with a text editor (like Notepad or TextEdit) to add,   
   > remove, or edit words manually.   
      
   Or find it with Everything, if you have that (doesn't everybody!).   
      
   >   
   > -Adding New Languages:   
   > If you need to change the dictionary language itself, navigate to   
   > Settings > Composition > Spelling to select or install new language   
   > dictionaries.   
      
   Again, good to know. (Though I don't _think_ I'll be composing in   
   Thunderbird in other than English!)   
   >   
   > - Important Notes   
   > 1. You can only directly edit your personal dictionary, not the main   
   > application dictionary.   
   > 2. Ensure Thunderbird is closed before editing persdict.dat directly to   
   > avoid file corruption.   
   >   
   > HTH.   
      
   It does.   
      
   --   
   J. P. Gilliver. UMRA: 1960/<1985 MB++G()ALIS-Ch++(p)Ar++T+H+Sh0!:`)DNAf   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)