diff --git a/www/content/patterns/active-search.md b/www/content/patterns/active-search.md
new file mode 100644
index 00000000..1e056299
--- /dev/null
+++ b/www/content/patterns/active-search.md
@@ -0,0 +1,193 @@
++++
+title = "Active Search"
+template = "demo.html"
++++
+
+This pattern demonstrates active search functionality that queries as the user types.
+
+We start with a search input and an empty table:
+
+```html
+<h3>
+  Search Contacts
+  <span class="htmx-indicator">
+    <img src="/img/bars.svg" alt=""/> Searching...
+   </span>
+</h3>
+<input class="form-control" type="search"
+       name="search" placeholder="Begin Typing To Search Users..."
+       hx-post="/search"
+       hx-trigger="input changed delay:500ms, keyup[key=='Enter'], load"
+       hx-target="#search-results"
+       hx-indicator=".htmx-indicator">
+
+<table class="table">
+    <thead>
+    <tr>
+      <th>First Name</th>
+      <th>Last Name</th>
+      <th>Email</th>
+    </tr>
+    </thead>
+    <tbody id="search-results">
+    </tbody>
+</table>
+```
+
+The input issues a `POST` to `/search` on the [`input`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/input_event) event and sets the body of the table to be the resulting content.
+
+We add the `delay:500ms` modifier to the trigger to delay sending the query until the user stops typing. Additionally,
+we add the `changed` modifier to the trigger to ensure we don't send new queries when the user doesn't change the
+value of the input (e.g. they hit an arrow key, or pasted the same value).
+
+We can use multiple triggers by separating them with a comma, this way we add 2 more triggers:
+- `keyup[key=='Enter']` triggers once enter is pressed. We use [event filters](/attributes/hx-trigger#standard-event-filters) here to check for [the key property in the KeyboardEvent object](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/key).
+- `load` in order to show all results initially on load.
+
+Finally, we show an indicator when the search is in flight with the `hx-indicator` attribute.
+
+{{ demoenv() }}
+
+<script>
+    //=========================================================================
+    // Mock Server - Intercepts fetch requests
+    //=========================================================================
+
+    // Contact database
+    const contacts = [
+        { "FirstName": "Venus", "LastName": "Grimes", "Email": "lectus.rutrum@Duisa.edu" },
+        { "FirstName": "Fletcher", "LastName": "Owen", "Email": "metus@Aenean.org" },
+        { "FirstName": "William", "LastName": "Hale", "Email": "eu.dolor@risusodio.edu" },
+        { "FirstName": "TaShya", "LastName": "Cash", "Email": "tincidunt.orci.quis@nuncnullavulputate.co.uk" },
+        { "FirstName": "Kevyn", "LastName": "Hoover", "Email": "tristique.pellentesque.tellus@Cumsociis.co.uk" },
+        { "FirstName": "Jakeem", "LastName": "Walker", "Email": "Morbi.vehicula.Pellentesque@faucibusorci.org" },
+        { "FirstName": "Malcolm", "LastName": "Trujillo", "Email": "sagittis@velit.edu" },
+        { "FirstName": "Wynne", "LastName": "Rice", "Email": "augue.id@felisorciadipiscing.edu" },
+        { "FirstName": "Evangeline", "LastName": "Klein", "Email": "adipiscing.lobortis@sem.org" },
+        { "FirstName": "Jennifer", "LastName": "Russell", "Email": "sapien.Aenean.massa@risus.com" },
+        { "FirstName": "Rama", "LastName": "Freeman", "Email": "Proin@quamPellentesquehabitant.net" },
+        { "FirstName": "Jena", "LastName": "Mathis", "Email": "non.cursus.non@Phaselluselit.com" },
+        { "FirstName": "Alexandra", "LastName": "Maynard", "Email": "porta.elit.a@anequeNullam.ca" },
+        { "FirstName": "Tallulah", "LastName": "Haley", "Email": "ligula@id.net" },
+        { "FirstName": "Timon", "LastName": "Small", "Email": "velit.Quisque.varius@gravidaPraesent.org" },
+        { "FirstName": "Randall", "LastName": "Pena", "Email": "facilisis@Donecconsectetuer.edu" },
+        { "FirstName": "Conan", "LastName": "Vaughan", "Email": "luctus.sit@Classaptenttaciti.edu" },
+        { "FirstName": "Dora", "LastName": "Allen", "Email": "est.arcu.ac@Vestibulumante.co.uk" },
+        { "FirstName": "Aiko", "LastName": "Little", "Email": "quam.dignissim@convallisest.net" },
+        { "FirstName": "Jessamine", "LastName": "Bauer", "Email": "taciti.sociosqu@nibhvulputatemauris.co.uk" },
+        { "FirstName": "Gillian", "LastName": "Livingston", "Email": "justo@atiaculisquis.com" },
+        { "FirstName": "Laith", "LastName": "Nicholson", "Email": "elit.pellentesque.a@diam.org" },
+        { "FirstName": "Paloma", "LastName": "Alston", "Email": "cursus@metus.org" },
+        { "FirstName": "Freya", "LastName": "Dunn", "Email": "Vestibulum.accumsan@metus.co.uk" },
+        { "FirstName": "Griffin", "LastName": "Rice", "Email": "justo@tortordictumeu.net" },
+        { "FirstName": "Catherine", "LastName": "West", "Email": "malesuada.augue@elementum.com" },
+        { "FirstName": "Jena", "LastName": "Chambers", "Email": "erat.Etiam.vestibulum@quamelementumat.net" },
+        { "FirstName": "Neil", "LastName": "Rodriguez", "Email": "enim@facilisis.com" },
+        { "FirstName": "Freya", "LastName": "Charles", "Email": "metus@nec.net" },
+        { "FirstName": "Anastasia", "LastName": "Strong", "Email": "sit@vitae.edu" },
+        { "FirstName": "Bell", "LastName": "Simon", "Email": "mollis.nec.cursus@disparturientmontes.ca" },
+        { "FirstName": "Minerva", "LastName": "Allison", "Email": "Donec@nequeIn.edu" },
+        { "FirstName": "Yoko", "LastName": "Dawson", "Email": "neque.sed@semper.net" },
+        { "FirstName": "Nadine", "LastName": "Justice", "Email": "netus@et.edu" },
+        { "FirstName": "Hoyt", "LastName": "Rosa", "Email": "Nullam.ut.nisi@Aliquam.co.uk" },
+        { "FirstName": "Shafira", "LastName": "Noel", "Email": "tincidunt.nunc@non.edu" },
+        { "FirstName": "Jin", "LastName": "Nunez", "Email": "porttitor.tellus.non@venenatisamagna.net" },
+        { "FirstName": "Barbara", "LastName": "Gay", "Email": "est.congue.a@elit.com" },
+        { "FirstName": "Riley", "LastName": "Hammond", "Email": "tempor.diam@sodalesnisi.net" },
+        { "FirstName": "Molly", "LastName": "Fulton", "Email": "semper@Naminterdumenim.net" },
+        { "FirstName": "Dexter", "LastName": "Owen", "Email": "non.ante@odiosagittissemper.ca" },
+        { "FirstName": "Kuame", "LastName": "Merritt", "Email": "ornare.placerat.orci@nisinibh.ca" },
+        { "FirstName": "Maggie", "LastName": "Delgado", "Email": "Nam.ligula.elit@Cum.org" },
+        { "FirstName": "Hanae", "LastName": "Washington", "Email": "nec.euismod@adipiscingelit.org" },
+        { "FirstName": "Jonah", "LastName": "Cherry", "Email": "ridiculus.mus.Proin@quispede.edu" },
+        { "FirstName": "Cheyenne", "LastName": "Munoz", "Email": "at@molestiesodalesMauris.edu" },
+        { "FirstName": "India", "LastName": "Mack", "Email": "sem.mollis@Inmi.co.uk" },
+        { "FirstName": "Lael", "LastName": "Mcneil", "Email": "porttitor@risusDonecegestas.com" },
+        { "FirstName": "Jillian", "LastName": "Mckay", "Email": "vulputate.eu.odio@amagnaLorem.co.uk" },
+        { "FirstName": "Shaine", "LastName": "Wright", "Email": "malesuada@pharetraQuisqueac.org" }
+    ];
+
+    // Search function
+    function searchContacts(query) {
+        if (!query) return contacts;
+
+        const searchTerm = query.toLowerCase();
+        return contacts.filter(contact =>
+            contact.FirstName.toLowerCase().includes(searchTerm) ||
+            contact.LastName.toLowerCase().includes(searchTerm) ||
+            contact.Email.toLowerCase().includes(searchTerm)
+        );
+    }
+
+    // Template function
+    function renderResults(contacts) {
+        return contacts.map(c =>
+            `<tr>
+                <td>${c.FirstName}</td>
+                <td>${c.LastName}</td>
+                <td>${c.Email}</td>
+            </tr>`
+        ).join('\n');
+    }
+
+    function renderSearchUI() {
+        return `<h3>
+Search Contacts
+<span class="htmx-indicator">
+<img src="/img/bars.svg" alt=""/> Searching...
+</span>
+</h3>
+
+<input class="form-control" type="search"
+       name="search" placeholder="Begin Typing To Search Users..."
+       hx-post="/search"
+       hx-trigger="input changed delay:500ms, keyup[key=='Enter'], load"
+       hx-target="#search-results"
+       hx-indicator=".htmx-indicator">
+
+<table class="table">
+<thead>
+<tr>
+  <th>First Name</th>
+  <th>Last Name</th>
+  <th>Email</th>
+</tr>
+</thead>
+<tbody id="search-results">
+</tbody>
+</table>`;
+    }
+
+    // Intercept fetch requests
+    const originalFetch = window.fetch;
+    window.fetch = async function(url, options) {
+        // Handle /init request
+        if (url.includes('/init')) {
+            return new Response(renderSearchUI(), {
+                status: 200,
+                headers: { 'Content-Type': 'text/html' }
+            });
+        }
+
+        // Handle /search request
+        if (url.includes('/search')) {
+            // Add small delay to simulate network
+            await new Promise(resolve => setTimeout(resolve, 200));
+
+            // Parse form data from request body
+            const formData = new URLSearchParams(await options.body);
+            const searchQuery = formData.get('search') || '';
+
+            const results = searchContacts(searchQuery);
+            const html = renderResults(results);
+
+            return new Response(html, {
+                status: 200,
+                headers: { 'Content-Type': 'text/html' }
+            });
+        }
+
+        // Pass through other requests
+        return originalFetch(url, options);
+    };
+</script>
diff --git a/www/content/talk/_index.md b/www/content/talk/_index.md
new file mode 100644
index 00000000..fdf429d2
--- /dev/null
+++ b/www/content/talk/_index.md
@@ -0,0 +1,3 @@
++++
+redirect_to = "/help/"
++++
diff --git a/www/docs/DOC_UPDATE_ANALYSIS.md b/www/docs/DOC_UPDATE_ANALYSIS.md
new file mode 100644
index 00000000..8a503188
--- /dev/null
+++ b/www/docs/DOC_UPDATE_ANALYSIS.md
@@ -0,0 +1,921 @@
+# HTMX 4 Documentation Update Analysis
+
+**Generated:** 2025-10-26
+**Purpose:** Comprehensive analysis of documentation updates needed for HTMX 4 migration from HTMX 2.0
+
+---
+
+## Executive Summary
+
+### Major Architectural Changes
+
+1. **Complete Internal Rewrite**: HTMX 4 uses a class-based architecture (`class Htmx`) vs HTMX 2.0's functional/object approach
+2. **Event Naming Changes**: Event names have been restructured with more consistent naming patterns
+3. **Simplified Core Attributes**: Several attributes have been consolidated or renamed
+4. **Request Context Model**: New unified request context (`ctx`) object replacing separate configurations
+5. **Removed Features**: Several HTMX 2.0 features have been removed or deprecated
+
+### Documentation Impact
+
+- **Critical Updates Required**: ~60% of documentation needs revision
+- **New Sections Needed**: ~15% new content required
+- **Deprecated Content**: ~10% needs removal
+- **Minor Updates**: ~15% requires minor clarification
+
+---
+
+## Section-by-Section Analysis
+
+### 1. Introduction Section (#introduction)
+
+**Priority:** LOW
+**Status:** Minimal changes needed
+
+**Required Changes:**
+- Update version number references from 2.0.x to 4.0
+- No conceptual changes needed - the core philosophy remains the same
+
+**Action Items:**
+- [ ] Update example code if any syntax changes apply
+- [ ] Verify all conceptual examples still work
+
+---
+
+### 2. Installing Section (#installing)
+
+**Priority:** CRITICAL
+**Status:** Major updates required
+
+**Required Changes:**
+```html
+<!-- OLD (2.0): -->
+<script src="https://cdn.jsdelivr.net/npm/htmx.org@2.0.8/dist/htmx.min.js">
+
+<!-- NEW (4.0): -->
+<script src="https://cdn.jsdelivr.net/npm/htmx.org@4.0.0/dist/htmx.min.js">
+```
+
+**Action Items:**
+- [ ] Update all CDN links to version 4.0
+- [ ] Update npm installation commands to @4.0.0
+- [ ] Verify webpack integration still works the same way
+- [ ] Update integrity hashes for new version
+
+---
+
+### 3. AJAX Section (#ajax)
+
+**Priority:** MEDIUM
+**Status:** Moderate changes needed
+
+**Current Documentation Status:**
+- Core AJAX attributes remain unchanged: `hx-get`, `hx-post`, `hx-put`, `hx-patch`, `hx-delete`
+- These work identically in HTMX 4
+
+**New in HTMX 4:**
+- `hx-action` attribute (alternative to using verb-specific attributes)
+- `hx-method` attribute (used with `hx-action`)
+
+**Required Changes:**
+Add documentation for new pattern:
+```html
+<!-- New in HTMX 4: -->
+<button hx-action="/api/users" hx-method="post">
+    Create User
+</button>
+
+<!-- Equivalent to: -->
+<button hx-post="/api/users">
+    Create User
+</button>
+```
+
+**Action Items:**
+- [ ] Add section explaining `hx-action` + `hx-method` pattern
+- [ ] Explain when to use each approach
+- [ ] Update examples to show both patterns where appropriate
+
+---
+
+### 4. Triggers Section (#triggers)
+
+**Priority:** HIGH
+**Status:** Significant changes needed
+
+**Trigger Parsing Changes:**
+- HTMX 4 uses new `__tokenize()` and `__parseTriggerSpecs()` methods
+- More robust parsing of complex trigger specifications
+- Improved handling of quoted strings in triggers
+
+**No Breaking Changes in Syntax**, but improved behavior:
+- Better handling of edge cases
+- More consistent parsing of modifiers
+
+**Action Items:**
+- [ ] Add note about improved trigger parsing
+- [ ] Verify all examples still work (they should)
+- [ ] Add examples of complex trigger patterns that now work better
+
+---
+
+### 5. Indicators Section (#indicators)
+
+**Priority:** MEDIUM
+**Status:** Attribute name change required
+
+**Breaking Change:**
+```html
+<!-- HTMX 2.0: -->
+<button hx-get="/data" hx-disabled-elt="this">
+
+<!-- HTMX 4: -->
+<button hx-get="/data" hx-disable="this">
+```
+
+**Required Changes:**
+- `hx-disabled-elt` renamed to `hx-disable`
+- Functionality remains the same
+- Selector syntax unchanged
+
+**Action Items:**
+- [ ] **CRITICAL:** Update all references from `hx-disabled-elt` to `hx-disable`
+- [ ] Update code examples
+- [ ] Add migration note for users upgrading from 2.0
+
+---
+
+### 6. Swapping Section (#swapping)
+
+**Priority:** HIGH
+**Status:** New swap modifiers and behavior changes
+
+**New Swap Modifier:**
+```html
+<!-- New in HTMX 4: -->
+<div hx-swap="outerHTML strip:true">
+```
+
+The `strip` modifier controls whether outer element is included:
+- `strip:true` - swaps only children (strips outer element)
+- `strip:false` - includes outer element (default for most swap styles)
+
+**Swap Modifier Changes:**
+- `strip` is now available as a modifier
+- Auto-applied to certain contexts (template partials)
+
+**Action Items:**
+- [ ] Add documentation for `strip:true/false` modifier
+- [ ] Update swap modifiers table
+- [ ] Explain when strip is automatically applied
+- [ ] Add examples showing strip behavior
+
+---
+
+### 7. Out of Band Swaps Section (#oob_swaps)
+
+**Priority:** HIGH
+**Status:** Major new feature - Partial/Template system
+
+**New Feature: Partial Elements**
+HTMX 4 introduces a `<partial>` element (converted to `<template partial>` internally):
+
+```html
+<!-- Response from server: -->
+<div>
+    Main content here
+</div>
+<partial hx-target="#sidebar" hx-swap="innerHTML">
+    Sidebar content
+</partial>
+<partial hx-target="#footer">
+    Footer content
+</partial>
+```
+
+**How It Works:**
+1. Server can return `<partial>` tags in response
+2. HTMX converts them to `<template partial>` internally
+3. Each partial targets a specific element
+4. Processed similarly to OOB swaps but with cleaner syntax
+
+**Template Partial Processing:**
+```javascript
+// In extractResponseContent:
+response = response.replace(/<partial\b/gi, '<template partial')
+                   .replace(/<\/partial>/gi, '</template>');
+```
+
+**Action Items:**
+- [ ] **NEW SECTION NEEDED:** Document the `<partial>` element system
+- [ ] Explain relationship to OOB swaps
+- [ ] Show examples of multi-target responses
+- [ ] Document `hx-target` and `hx-swap` on partials
+- [ ] Explain `strip` behavior with partials
+- [ ] Add server-side examples in multiple languages
+
+---
+
+### 8. Parameters Section (#parameters)
+
+**Priority:** MEDIUM
+**Status:** Minor changes
+
+**Changes:**
+- Core parameter handling unchanged
+- `hx-vals` still supported
+- `hx-include` still supported
+
+**Removed:**
+- **`hx-vars` attribute removed** (was deprecated in 2.0)
+
+**Action Items:**
+- [ ] Remove all references to `hx-vars`
+- [ ] Update examples that use `hx-vars` to use `hx-vals` instead
+- [ ] Add migration note
+
+---
+
+### 9. Confirming Requests Section (#confirming)
+
+**Priority:** MEDIUM
+**Status:** Minor API change
+
+**Changes in Confirm Handling:**
+
+```javascript
+// HTMX 4 can return a Promise from hx-confirm:
+let confirmVal = this.__maybeEvalAttributeValueAsync(elt, 'hx-confirm')
+if (confirmVal) {
+    if (confirmVal instanceof String) {
+        window.confirm(confirmVal)
+    } else {
+        let result = await confirmVal;
+        if (!result) return
+    }
+}
+```
+
+**Action Items:**
+- [ ] Update to show Promise-based confirm patterns
+- [ ] Add async confirm examples
+- [ ] Note the String vs Promise behavior
+
+---
+
+### 10. History Section (#history)
+
+**Priority:** HIGH
+**Status:** Event name changes
+
+**Event Name Changes:**
+```javascript
+// HTMX 2.0:
+htmx:beforeHistorySave
+htmx:historyRestore
+htmx:historyCacheMiss
+
+// HTMX 4:
+htmx:before:restore:history
+htmx:after:push:into:history
+htmx:after:replace:into:history
+htmx:before:history:update
+htmx:after:history:update
+```
+
+**New Structure:**
+- More consistent `before:` and `after:` patterns
+- More descriptive names (e.g., `push:into:history` vs just `pushUrl`)
+
+**Action Items:**
+- [ ] **CRITICAL:** Update all event name references
+- [ ] Create event migration table (2.0 → 4.0)
+- [ ] Update all code examples
+- [ ] Update event listener examples
+
+---
+
+### 11. Requests & Responses Section (#requests)
+
+**Priority:** CRITICAL
+**Status:** Major event name changes and new context model
+
+**Event Name Changes:**
+```javascript
+// HTMX 2.0 → HTMX 4
+
+htmx:configRequest → htmx:config:request
+htmx:beforeRequest → htmx:before:request
+htmx:afterRequest → htmx:after:request
+htmx:beforeSwap → htmx:before:swap
+htmx:afterSwap → htmx:after:swap
+htmx:beforeOnLoad → htmx:before:init
+htmx:load → htmx:after:init
+htmx:responseError → htmx:error
+htmx:sendError → htmx:error
+```
+
+**New Context Object Structure:**
+The request configuration is now unified in a `ctx` object:
+
+```javascript
+// HTMX 4 context structure:
+{
+    sourceElement: element,
+    sourceEvent: event,
+    status: "created", // tracks request lifecycle
+    select: "...",
+    optimistic: "...",
+    request: {
+        validate: true/false,
+        action: "/url",
+        method: "GET",
+        headers: {},
+        body: FormData,
+        form: formElement,
+        submitter: submitterElement,
+        abort: function,
+        // ... other request config
+    },
+    swapCfg: {
+        target: element,
+        swap: "innerHTML",
+        transition: true/false,
+        // ... swap configuration
+    },
+    response: {
+        raw: Response,
+        status: 200,
+        headers: Headers,
+        cancelled: false
+    },
+    text: "response body",
+    partialConfigs: [] // for OOB/partial swaps
+}
+```
+
+**Status Tracking:**
+HTMX 4 tracks request status through lifecycle:
+- `"created"` - context created
+- `"queued"` - queued due to sync strategy
+- `"dropped"` - dropped due to sync strategy
+- `"issuing"` - request being issued
+- `"response received"` - got response
+- `"swapped"` - content swapped
+- `"error: <message>"` - error occurred
+
+**Action Items:**
+- [ ] **CRITICAL:** Document new event naming convention
+- [ ] **CRITICAL:** Create comprehensive event reference table
+- [ ] Document new `ctx` object structure
+- [ ] Document `status` property and values
+- [ ] Update all event listener examples
+- [ ] Show how to access new context properties
+- [ ] Migration guide for event names
+
+---
+
+### 12. Validation Section (#validation)
+
+**Priority:** MEDIUM
+**Status:** Context object changes
+
+**Changes:**
+```javascript
+// HTMX 2.0:
+evt.detail.elt
+evt.detail.xhr
+
+// HTMX 4:
+evt.detail.cfg // The unified context object
+evt.detail.cfg.sourceElement
+evt.detail.cfg.request
+```
+
+**Validation in Request Context:**
+Validation moved to `request.validate`:
+```javascript
+ctx.request.validate = "true" === this.__attributeValue(
+    sourceElement,
+    "hx-validate",
+    sourceElement.matches('form') ? "true" : "false"
+)
+```
+
+**Action Items:**
+- [ ] Update examples to use `cfg` context
+- [ ] Update validation event examples
+- [ ] Document accessing validation state via context
+
+---
+
+### 13. Events & Logging Section (#events)
+
+**Priority:** CRITICAL
+**Status:** Complete event name overhaul
+
+**New Event Naming Convention:**
+HTMX 4 uses consistent `category:phase:action` pattern:
+
+```javascript
+// Lifecycle events:
+htmx:before:init
+htmx:after:init
+htmx:before:cleanup
+htmx:after:cleanup
+
+// Request events:
+htmx:config:request
+htmx:before:request
+htmx:after:request
+htmx:finally:request
+
+// Swap events:
+htmx:before:swap
+htmx:before:main:swap
+htmx:before:oob:swap
+htmx:before:partial:swap
+htmx:after:swap
+htmx:after:main:swap
+htmx:after:oob:swap
+htmx:after:partial:swap
+
+// History events:
+htmx:before:restore:history
+htmx:before:history:update
+htmx:after:history:update
+htmx:after:push:into:history
+htmx:after:replace:into:history
+```
+
+**Event Detail Changes:**
+All events now provide `{cfg: ctx}` where `ctx` is the unified context object.
+
+**Action Items:**
+- [ ] **CRITICAL:** Create complete event reference section
+- [ ] Document new naming convention
+- [ ] Provide HTMX 2.0 → 4.0 event migration table
+- [ ] Update all event listener examples
+- [ ] Document event detail structure changes
+- [ ] Add section on event.detail.cfg
+
+---
+
+### 14. Configuration Section (#config)
+
+**Priority:** HIGH
+**Status:** Some config options changed/removed
+
+**Removed Configuration Options:**
+```javascript
+// These are no longer in HTMX 4:
+useTemplateFragments  // Removed
+wsReconnectDelay      // WebSocket extension only
+wsBinaryType          // WebSocket extension only
+```
+
+**New Configuration Options:**
+```javascript
+htmx.config = {
+    // ... existing options ...
+
+    // HTMX 4 specific:
+    logAll: false,  // New: log all events
+    viewTransitions: true,  // Renamed from globalViewTransitions
+    selfRequestsOnly: true,  // Enhanced security
+    defaultTimeout: 60000   // New default timeout
+}
+```
+
+**Config Meta Tag:**
+```html
+<!-- HTMX 4 uses htmx:config: -->
+<meta name="htmx:config" content='{"logAll": true}'>
+```
+
+**Action Items:**
+- [ ] Remove documentation for deleted config options
+- [ ] Document new config options
+- [ ] Update config table with 4.0 options
+- [ ] Note `viewTransitions` rename
+- [ ] Update meta tag examples
+
+---
+
+### 15. Boosting Section (#boosting)
+
+**Priority:** MEDIUM
+**Status:** Internal changes, external API same
+
+**Implementation Changes:**
+```javascript
+// HTMX 4 tracks boosting with internal flag:
+elt.__htmx = {
+    eventHandler: this.__createHtmxEventHandler(elt),
+    requests: [],
+    boosted: true  // New flag
+}
+```
+
+**Behavior:**
+- `hx-boost` works identically
+- Better integration with request context
+- More reliable history handling
+
+**Action Items:**
+- [ ] Verify all examples still work
+- [ ] No documentation changes needed (internal only)
+
+---
+
+### 16. Extensions Section (#extensions)
+
+**Priority:** HIGH
+**Status:** Extension API likely changed
+
+**Likely Changes:**
+- Extension hooks may need updates for class-based architecture
+- Event name changes affect extension event listeners
+- Internal API changes may break extensions
+
+**Action Items:**
+- [ ] Review extension building guide
+- [ ] Update extension API documentation
+- [ ] Test all core extensions with HTMX 4
+- [ ] Create extension migration guide
+- [ ] Update extension examples
+
+---
+
+### 17. Security Section (#security)
+
+**Priority:** HIGH
+**Status:** New security features
+
+**New Security Features:**
+
+**`hx-disable` for security:**
+```html
+<!-- Disable htmx processing in user content: -->
+<div hx-disable>
+    <%= raw(user_content) %>
+</div>
+```
+
+**Enhanced `selfRequestsOnly`:**
+```javascript
+// HTMX 4 enforces same-origin by default:
+htmx.config.selfRequestsOnly = true
+
+// Request construction:
+{
+    ...(this.config.selfRequestsOnly && {mode: "same-origin"})
+}
+```
+
+**Action Items:**
+- [ ] Document `hx-disable` security usage
+- [ ] Emphasize `selfRequestsOnly` default
+- [ ] Update CSP examples
+- [ ] Add security best practices for HTMX 4
+
+---
+
+### 18. Scripting Section (#scripting)
+
+**Priority:** MEDIUM
+**Status:** `hx-on` changes
+
+**Changes:**
+The `hx-on:*` attribute system works the same, but events have new names:
+
+```html
+<!-- Update event names in hx-on: -->
+<button hx-post="/example"
+        hx-on:htmx:config:request="event.detail.cfg.request.headers['X-Custom'] = 'value'">
+    Post Me!
+</button>
+```
+
+**Action Items:**
+- [ ] Update `hx-on` examples with new event names
+- [ ] Show accessing `event.detail.cfg` instead of `event.detail`
+- [ ] Update event listener examples
+
+---
+
+### 19. Web Sockets & SSE Section (#websockets-and-sse)
+
+**Priority:** LOW
+**Status:** Extensions still work (with updates)
+
+**Note:** WebSockets and SSE remain extension-based. Extension compatibility needs verification.
+
+**HTMX 4 includes SSE config:**
+```javascript
+this.config = {
+    sse: false,
+    sseUrl: "/events",
+    // ...
+}
+```
+
+**Built-in SSE Support (New?):**
+```javascript
+__maybeEstablishSSEConnection() {
+    if (this.config.sse) {
+        this.__eventSource = new EventSource(this.config.sseUrl);
+        this.__eventSource.onmessage = async (event) => {
+            let cfg = {swapCfg: {swap: 'innerHTML'}};
+            this.extractResponseContent(event.data, cfg);
+            // ... process partials
+        };
+    }
+}
+```
+
+**Action Items:**
+- [ ] Verify if SSE is now built-in or still extension-based
+- [ ] Update extension compatibility notes
+- [ ] Test WebSocket extension with HTMX 4
+
+---
+
+### 20. Synchronization Section (#synchronization)
+
+**Priority:** MEDIUM
+**Status:** Enhanced with status tracking
+
+**New Queue Status:**
+```javascript
+class RequestQueue {
+    shouldIssueRequest(ctx, queueStrategy) {
+        // Sets ctx.status:
+        ctx.status = "queued";
+        ctx.status = "dropped";
+        // ...
+    }
+}
+```
+
+**Sync Strategies:**
+- Same strategies as HTMX 2.0
+- Better status tracking
+- More predictable behavior
+
+**Action Items:**
+- [ ] Verify examples still work
+- [ ] Add note about status tracking
+- [ ] Update any implementation details
+
+---
+
+## New Sections Needed
+
+### 1. Partial Elements Section
+
+**Priority:** CRITICAL
+**Location:** After "Out of Band Swaps"
+
+**Content Needed:**
+```markdown
+## Partial Elements (#partials)
+
+HTMX 4 introduces `<partial>` elements for cleaner multi-target responses.
+
+### Basic Usage
+[Examples]
+
+### Partial vs OOB Swaps
+[Comparison]
+
+### Server-Side Implementation
+[Examples in different languages]
+```
+
+---
+
+### 2. Request Context Section
+
+**Priority:** HIGH
+**Location:** In "Requests & Responses"
+
+**Content Needed:**
+```markdown
+## Request Context Object (#request-context)
+
+HTMX 4 uses a unified context object throughout the request lifecycle.
+
+### Context Structure
+[Full object reference]
+
+### Accessing Context in Events
+[Examples]
+
+### Status Values
+[List and meanings]
+```
+
+---
+
+### 3. Event Reference Section
+
+**Priority:** CRITICAL
+**Location:** In "Events & Logging"
+
+**Content Needed:**
+```markdown
+## HTMX 4 Event Reference (#event-reference)
+
+### Complete Event List
+[Table with all events]
+
+### Event Naming Convention
+[Explanation of category:phase:action pattern]
+
+### Event Detail Structure
+[What's in event.detail]
+
+### Migration from HTMX 2.0
+[Side-by-side comparison table]
+```
+
+---
+
+### 4. Migration Guide Section
+
+**Priority:** CRITICAL
+**Location:** After "Introduction", before "Installing"
+
+**Content Needed:**
+```markdown
+## HTMX 2.0 to 4.0 Migration Guide (#migration-4)
+
+### Breaking Changes
+- Attribute renames
+- Event name changes
+- Removed features
+
+### Updated Behavior
+- Enhanced features
+- New capabilities
+
+### Migration Checklist
+- Step-by-step upgrade process
+```
+
+---
+
+## Deprecated/Removed Features
+
+### Features Removed in HTMX 4
+
+1. **`hx-vars` attribute** - Use `hx-vals` instead
+2. **`hx-disabled-elt` attribute** - Renamed to `hx-disable`
+3. **Some config options** - See config section above
+
+### Features Likely Deprecated (Need Verification)
+
+1. **`hx-prompt` attribute** - Not seen in current code
+2. **`hx-params` attribute** - Not seen in current code
+3. **Response handling config structure** - May be changed
+
+**Action Items:**
+- [ ] Verify each deprecated feature
+- [ ] Create deprecation notice section
+- [ ] Provide migration path for each
+
+---
+
+## Priority Action Items Summary
+
+### Immediate (Critical)
+
+1. **Update all event names** throughout documentation
+2. **Create event migration table** (2.0 → 4.0)
+3. **Document `hx-disable`** (renamed from `hx-disabled-elt`)
+4. **Create Partial Elements section**
+5. **Create Request Context documentation**
+6. **Update all CDN/install links** to version 4.0
+7. **Create Migration Guide section**
+
+### High Priority
+
+1. **Update swap modifiers** (add `strip`)
+2. **Document new event naming convention**
+3. **Update configuration reference**
+4. **Update extension documentation**
+5. **Update security section**
+6. **Verify and update `hx-confirm` async behavior**
+
+### Medium Priority
+
+1. **Update scripting examples** with new event names
+2. **Update validation examples** with context object
+3. **Document `hx-action` + `hx-method` pattern**
+4. **Update boosting internal notes**
+5. **Verify SSE/WebSocket compatibility**
+
+### Low Priority
+
+1. **Update introduction examples** (if needed)
+2. **Polish existing examples** for clarity
+3. **Add more advanced examples**
+4. **Update troubleshooting guides**
+
+---
+
+## Verification Checklist
+
+- [ ] All event names updated
+- [ ] All attribute names updated
+- [ ] All code examples tested with HTMX 4
+- [ ] All config options verified
+- [ ] Extension compatibility verified
+- [ ] Migration guide complete
+- [ ] All CDN links updated
+- [ ] All cross-references updated
+- [ ] All examples runnable
+- [ ] Security section reviewed
+
+---
+
+## Notes for Documentation Writers
+
+### Testing Approach
+1. Set up HTMX 4 test environment
+2. Run through each example in documentation
+3. Update examples that don't work
+4. Note any behavior changes
+
+### Style Guidelines
+- Use consistent `htmx:` prefix for all events
+- Always show `event.detail.cfg` in event examples
+- Highlight breaking changes clearly
+- Provide migration snippets for changed features
+
+### Cross-Reference Updates
+When updating sections, check:
+- Links to other documentation sections
+- Links to attribute pages
+- Links to event reference
+- External blog posts/essays that reference HTMX
+
+---
+
+## Appendix: Complete Event Name Comparison
+
+| HTMX 2.0 Event | HTMX 4 Event | Breaking? |
+|----------------|--------------|-----------|
+| `htmx:abort` | `htmx:abort` | No |
+| `htmx:afterOnLoad` | `htmx:after:init` | **Yes** |
+| `htmx:afterProcessNode` | `htmx:after:init` | **Yes** |
+| `htmx:afterRequest` | `htmx:after:request` | **Yes** |
+| `htmx:afterSettle` | `htmx:after:swap` | **Yes** |
+| `htmx:afterSwap` | `htmx:after:swap` | **Yes** |
+| `htmx:beforeCleanupElement` | `htmx:before:cleanup` | **Yes** |
+| `htmx:beforeOnLoad` | `htmx:before:init` | **Yes** |
+| `htmx:beforeProcessNode` | `htmx:before:init` | **Yes** |
+| `htmx:beforeRequest` | `htmx:before:request` | **Yes** |
+| `htmx:beforeSwap` | `htmx:before:swap` | **Yes** |
+| `htmx:beforeTransition` | `htmx:before:transition` | Minor |
+| `htmx:configRequest` | `htmx:config:request` | **Yes** |
+| `htmx:confirm` | `htmx:confirm` | No |
+| `htmx:historyCacheMiss` | `htmx:before:restore:history` | **Yes** |
+| `htmx:historyCacheError` | `htmx:error` | **Yes** |
+| `htmx:historyRestore` | `htmx:after:restore:history` | **Yes** |
+| `htmx:beforeHistorySave` | `htmx:before:history:update` | **Yes** |
+| `htmx:load` | `htmx:after:init` | **Yes** |
+| `htmx:noSSESourceError` | `htmx:error` | **Yes** |
+| `htmx:oobAfterSwap` | `htmx:after:oob:swap` | **Yes** |
+| `htmx:oobBeforeSwap` | `htmx:before:oob:swap` | **Yes** |
+| `htmx:oobErrorNoTarget` | `htmx:error` | **Yes** |
+| `htmx:onLoadError` | `htmx:error` | **Yes** |
+| `htmx:prompt` | `htmx:prompt` | No |
+| `htmx:pushedIntoHistory` | `htmx:after:push:into:history` | **Yes** |
+| `htmx:replacedInHistory` | `htmx:after:replace:into:history` | **Yes** |
+| `htmx:responseError` | `htmx:error` | **Yes** |
+| `htmx:sendError` | `htmx:error` | **Yes** |
+| `htmx:sseError` | `htmx:error` | **Yes** |
+| `htmx:swapError` | `htmx:error` | **Yes** |
+| `htmx:targetError` | `htmx:error` | **Yes** |
+| `htmx:timeout` | `htmx:error` | **Yes** |
+| `htmx:trigger` | `htmx:trigger` | No |
+| `htmx:validateUrl` | `htmx:validate:url` | Minor |
+| `htmx:validation:validate` | `htmx:validation:validate` | No |
+| `htmx:validation:failed` | `htmx:validation:failed` | No |
+| `htmx:validation:halted` | `htmx:validation:halted` | No |
+| `htmx:xhr:abort` | `htmx:abort` | **Yes** |
+| `htmx:xhr:loadend` | `htmx:after:request` | **Yes** |
+| `htmx:xhr:loadstart` | `htmx:before:request` | **Yes** |
+| `htmx:xhr:progress` | `htmx:xhr:progress` | No |
+
+**New Events in HTMX 4:**
+- `htmx:before:main:swap` - Before main content swap
+- `htmx:after:main:swap` - After main content swap
+- `htmx:before:partial:swap` - Before partial swap
+- `htmx:after:partial:swap` - After partial swap
+- `htmx:finally:request` - Finally block for requests
+
+---
+
+**End of Analysis**