[
    {
        "role": "user",
        "content": "how%20do%20i%20change%20the%20default%20spell%20checking%20language%20from%20US%20to%20British%20english%20using%20the%20thunderbird%20email%20client."
    },
    {
        "role": "assistant",
        "content": "Here are steps to change the default spell-checking dictionary in Thunderbird from US English (en-US) to British English (en-GB), and make it stay that way:\n\n---\n\n### 1. Install a British-English Spellchecker Dictionary\n\nBefore you can set British English as default, make sure Thunderbird has the en-GB dictionary installed.\n\n- Go to **Menu > Add-ons & Themes** (or **Tools > Add-Ons**).\n- Search for **\u201cBritish-English Dictionary\u201d**. A good option is the \u201cBritish-English Dictionary (GB) 5.0 by cybrkyd,\u201d updated recently. ([services.addons.thunderbird.net](https://services.addons.thunderbird.net/en-gb/thunderbird/addon/british-english-dictionary-gb/?utm_source=openai))\n- Alternatively, also install the **English (British) dictionary** from Thunderbird\u2019s official dictionaries add-on page. ([services.addons.thunderbird.net](https://services.addons.thunderbird.net/en-gb/thunderbird/language-tools/?utm_source=openai))\n\nInstall and restart Thunderbird if required.\n\n---\n\n### 2. Set British English as the Default Spellcheck Language\n\nOnce the British dictionary is installed:\n\n1. In Thunderbird\u2019s menu, go to **Settings** (or **Options/Preferences**, depending on operating system).\n2. Navigate to **Composition \u2192 Spelling**.\n3. Under the **Language** dropdown, pick **English (United Kingdom)** or **English (British)**. ([support.mozilla.org](https://support.mozilla.org/en-US/questions/1278997?utm_source=openai))\n\nThis should set the dictionary used by default in all new composed messages.\n\n---\n\n### 3. Ensure Thunderbird Uses British English Permanently\n\nThere are a few things to check so that the setting doesn\u2019t revert:\n\n- Thunderbird\u2019s *interface locale* (which determines menus and some default settings) may be en-US. If your interface is set to US, Thunderbird tends to use US English by default after updates. ([support.mozilla.org](https://support.mozilla.org/en-US/questions/1169858?utm_source=openai))  \n- If this is the case, downloading an **en-GB version of Thunderbird** helps. That means the entire application will be localized to UK English rather than just the dictionary. ([support.mozilla.org](https://support.mozilla.org/en-US/questions/1169858?utm_source=openai))  \n- Also, make sure in **Settings \u2192 General \u2192 Language**, you set alternatives with \u201cEnglish (United Kingdom)\u201d at the top, especially if you have multiple language packages. ([support.mozilla.org](https://support.mozilla.org/en-US/questions/1289991?utm_source=openai))\n\n---\n\n### 4. Switch Language Per-Message (Optional)\n\nIf you sometimes need US English for particular messages:\n\n- In the compose window, there\u2019s a \u201cSpelling\u201d button or icon. Clicking small arrow beside it lets you choose which dictionary to use for just that message. ([support.mozilla.org](https://support.mozilla.org/en-US/questions/1270669?utm_source=openai))\n\n---\n\nIf you tell me your Thunderbird version and operating system, I can guide you step-by-step for your setup."
    },
    {
        "role": "user",
        "content": "please%20rewrite%20the%20previous%20response%20in%20a%20format%20that%20is%20suitable%20for%20a%20screen%20reader%20user.%20All%20desktop%20instructions%20should%20not%20mention%20the%20mouse%20and%20rely%20on%20keyboard%20input%20and%20mobile%20instructions%20should%20use%20correct%20screen%20reader%20gestures"
    },
    {
        "role": "assistant",
        "content": "Here\u2019s a version of the instructions formatted for screen-reader users. Desktop instructions use only the keyboard. Mobile instructions use common screen-reader gestures. Adjust the steps according to your platform (Windows, macOS, Linux, iOS, Android).\n\n---\n\n## \ud83d\udda5\ufe0f Desktop (Windows, macOS, Linux)\n\nThese instructions use only the keyboard\u2014no mouse or trackpad. If a menu is hidden, press **Alt** (Windows/Linux) or **Control-F2** (macOS) to reveal it.\n\n### Step 1: Install the British English Dictionary\n\n1. Press **Alt** + **F** or **Alt** + **T** to open the *File* or *Tools* menu. If you don\u2019t see *Tools*, press **Alt** to open Thunderbird\u2019s top menu, then use arrow keys until you reach **Tools**.  \n2. Under **Tools**, select **Add-ons & Themes** by pressing **Enter**.  \n3. Press **Tab** until focus moves into the \u201cSearch add-ons\u201d field. Type **British English Dictionary**.  \n4. Use **Tab** and **Arrow Down** to explore results. When you find the entry labelled \u201cEnglish (British) Dictionary\u201d, press **Enter** to open details.  \n5. Tab to \u201cAdd to Thunderbird\u201d or \u201cInstall\u201d and press **Enter**.  \n6. If prompted, press **Tab** to \u201cRestart Now\u201d or similar, then **Enter** to restart the app so the new dictionary loads.\n\n---\n\n### Step 2: Set British English as Default for Spell-check\n\n1. Press **Alt** to open the menu bar. Use arrow keys to navigate to **Tools** (Windows/Linux) or **Thunderbird** menu (macOS), then press **Enter**.  \n2. Use arrows to go to **Settings** (or **Options/Preferences**) and press **Enter**.  \n3. Press **Tab** repeatedly until you reach **Composition**, then press **Enter**.  \n4. Use Tab to reach **Spelling** section/tab, then press **Enter**.  \n5. Tab until you reach the \u201cLanguage\u201d pull-down menu. Press **Spacebar** or **Enter** to open it.  \n6. Use arrow keys to move to **English (United Kingdom)** and press **Enter**.  \n7. Tab to \u201cEnable spell check as you type\u201d and check mark it (Spacebar). Also check \u201cCheck spelling before sending\u201d if desired.  \n8. Tab to \u201cOK\u201d or \u201cSave\u201d and press **Enter**.\n\n---\n\n### Step 3: Ensure the Preference Persists\n\n1. Back in **Settings/Preferences**, press **Tab** until you reach **General** \u2192 use arrows or Tab to go to **Language** or **Language & Appearance** section.  \n2. Tab into the \u201cLanguage to display menus, messages, notifications\u201d dropdown. Press **Enter**, select **English (United Kingdom)**, press **Enter**.  \n3. If there is a button \u201cSet Alternatives\u201d or \u201cAlternate languages\u201d, tab to that, press **Enter**, move **English (UK)** to the top of the list using arrow and/or PageUp/PageDown keys, then press **Enter**.  \n4. Tab to \u201cOK\u201d or \u201cSave\u201d and press **Enter**.  \n5. Close Thunderbird and restart it via keyboard if needed (e.g. Alt + F4 or Command-Q then reopen) to ensure changes take effect.\n\n---\n\n### Optional Step 4: Change Spell-check Language For One Message\n\n1. Create a new message (press **C** if that is the shortcut, or via the menu Alt + M \u2192 New Message).  \n2. In the compose window, press **Alt** + **S** if there is a \u201cSpelling\u201d button under *Tools* menu; otherwise navigate via tabbing to find the \u201cSpelling\u201d menu.  \n3. Once in Spelling menu, Tab to \u201cLanguage\u201d submenu, press **Enter**, then select **English (United Kingdom)** with arrow keys and **Enter**.\n\n---\n\n## \ud83d\udcf1 Mobile (iOS or Android)\n\nThese instructions assume you use a screen reader like VoiceOver (iOS) or TalkBack (Android). Use common gestures: **single tap**, **double-tap**, **swipe** etc.\n\n### Step 1: Install British English Dictionary (if needed)\n\n- Launch Thunderbird app.  \n- Locate the **menu** icon (often three lines or a gear). Swipe until you hear \u201cAdd-ons\u201d or \u201cManage add-ons\u201d then double-tap to open.  \n- Swipe through list until you find \u201cDictionaries\u201d or \u201cLanguage tools\u201d. Double-tap to enter.  \n- Swipe to \u201cEnglish (British)\u201d dictionary and double-tap to install. If prompted, confirm by swiping to \u201cInstall\u201d and double-tap.\n\n---\n\n### Step 2: Set British English as Default Spell-check Language\n\n- From main screen, swipe to find \u201cSettings\u201d and double-tap.  \n- Swipe down to \u201cComposition\u201d or \u201cWriting settings\u201d and double-tap.  \n- Find \u201cSpelling\u201d or \u201cSpell check\u201d option via swipe. Double-tap to open.  \n- Swipe until focus moves to \u201cLanguage\u201d option. Double-tap to open the list of languages.  \n- Swipe to \u201cEnglish (United Kingdom)\u201d and double-tap to select it.  \n- Swipe to the switch for \u201cEnable spell check as you type\u201d and double-tap to turn it on. If a \u201cCheck before sending\u201d toggle exists, turn it on similarly.  \n- Swipe to \u201cSave\u201d or \u201cApply\u201d and double-tap.\n\n---\n\n### Optional Step 3: Change Spell-check Language Per Message\n\n- When composing a new message, swipe to toolbar or menu within composer.  \n- Swipe to \u201cSpelling\u201d or \u201cSpell check\u201d and double-tap.  \n- Swipe to \u201cLanguage\u201d submenu, double-tap, then select \u201cEnglish (United Kingdom)\u201d as above.\n\n---\n\nIf you tell me specifically which platform you are using (for example: Windows 10 + NVDA, macOS + VoiceOver, Android + TalkBack, etc.), I can adapt the steps even more precisely for your setup."
    }
]