diff --git a/example1/example.rkt b/example1/example.rkt
index beec84b..e467f79 100644
--- a/example1/example.rkt
+++ b/example1/example.rkt
@@ -23,36 +23,34 @@
 (define-runtime-path dialog-html "example-1-dialog.html")
 (define-runtime-path cur-dir ".")
 
-#|
-(define test-menu (menu 'main-menu
-                   (menu-item 'm-file "File"
-                                   #:submenu
-                                   (menu (menu-item 'm-open "Open File")
-                                         (menu-item 'm-close "Close File")
-                                         (menu-item 'm-select-dir "Select Folder" #:separator #t)
-                                         (menu-item 'm-quit "Quit" #:separator #t)))
-                   (menu-item 'm-edit "Edit"
-                                   #:submenu
-                                   (menu (menu-item 'm-copy "Copy")
-                                         (menu-item 'm-cut  "Cut")
-                                         (menu-item 'm-paste "Paste")
-                                         (menu-item 'm-prefs "Preferences" #:separator #t)
-                                         ))
-                   (menu-item 'm-auto "Processes"
-                                   #:submenu
-                                   (menu (menu-item 'm-start "Start counter")
-                                         (menu-item 'm-sub "Submenu"
-                                                    #:submenu
-                                                    (menu (menu-item 'm-sub1 "Submenu 1")
-                                                          (menu-item 'm-sub2 "Submenu 2")
-                                                          (menu-item 'm-sub3 "Submenu 3")
-                                                          )
-                                                    )
-                                         (menu-item 'm-stop "Stop counter")
-                                         )
-                                   )
-                        ))
-|#
+(define test-menu (wv-menu 'main-menu
+                   (wv-menu-item 'm-file "File"
+                                 #:submenu
+                                 (wv-menu (wv-menu-item 'm-open "Open File")
+                                          (wv-menu-item 'm-close "Close File")
+                                          (wv-menu-item 'm-select-dir "Select Folder" #:separator #t)
+                                          (wv-menu-item 'm-quit "Quit" #:separator #t)))
+                   (wv-menu-item 'm-edit "Edit"
+                                 #:submenu
+                                 (wv-menu (wv-menu-item 'm-copy "Copy")
+                                          (wv-menu-item 'm-cut  "Cut")
+                                          (wv-menu-item 'm-paste "Paste")
+                                          (wv-menu-item 'm-prefs "Preferences" #:separator #t)
+                                          ))
+                   (wv-menu-item 'm-auto "Processes"
+                                 #:submenu
+                                 (wv-menu (wv-menu-item 'm-start "Start counter")
+                                          (wv-menu-item 'm-sub "Submenu"
+                                                        #:submenu
+                                                        (wv-menu (wv-menu-item 'm-sub1 "Submenu 1")
+                                                                 (wv-menu-item 'm-sub2 "Submenu 2")
+                                                                 (wv-menu-item 'm-sub3 "Submenu 3")
+                                                                 )
+                                                        )
+                                          (wv-menu-item 'm-stop "Stop counter")
+                                          )
+                                 )
+                   ))
 
 (define example-1-dialog%
   (class wv-dialog%
@@ -222,7 +220,7 @@
       )
 
     (define/override (page-loaded oke)
-      (ww-debug (format "HTML LOADED ~a" oke))
+      (ww-debug (format "HTML LOADED ~a ~a" oke (current-milliseconds)))
       (set! has-page oke)
       (super page-loaded oke)
       (displayln "super called")
@@ -259,11 +257,13 @@
               (λ (el evt data)
                 (send this choose-dir*)))
         )
-      (displayln "page-loaded done")
-      )
-      
-      ;(ww-debug "SETTING MENU")
-      #|(let* ((div-open (send this element 'div-open))
+
+      (displayln (format "setting menu ~a" (current-milliseconds)))
+      (send this set-menu! test-menu)
+      (send this connect-menu! 'm-quit (λ ()
+                                         (send this reset-counter)
+                                         (send this close)))
+      (let* ((div-open (send this element 'div-open))
              (c-open 0)
              (div-close (send this element 'div-close))
              (c-close 0)
@@ -273,39 +273,29 @@
              (c-cut 0)
              (div-paste (send this element 'div-paste))
              (c-paste 0)
+             (mk (λ (item el str count)
+                   (send this connect-menu! item
+                         (λ ()
+                           (send el set-innerHTML! (format "~a ~a" str (count))))
+                         )
+                   )
+                 )
              )
+        (mk 'm-open div-open "Open file" (inc c-open))
+        (mk 'm-close div-close "Close file" (inc c-close))
+        (mk 'm-copy div-copy "Edit Copy" (inc c-copy))
+        (mk 'm-cut div-cut "Edit Cut" (inc c-cut))
+        (mk 'm-paste div-paste "Edit Paste" (inc c-paste))
+        )
+
+      (send this connect-menu! 'm-start (λ () (send this start-counter)))
+      (send this connect-menu! 'm-stop (λ () (send this reset-counter)))
+      (send this connect-menu! 'm-prefs (λ () (send this prefs)))
+      (send this connect-menu! 'm-select-dir (λ () (send this choose-dir*)))
         
-        (send this set-menu! test-menu)
-        (send this connect-menu! 'm-quit
-              (λ ()
-                (send this reset-counter)
-                (send this close))
-              )
-        (let ((make-menu-executor (λ (item elem string count)
-                                    (send this connect-menu! item
-                                          (λ ()
-                                            (send elem set-inner-html! (format "~a ~a" string (count)))))))
-              )
-          (make-menu-executor 'm-open div-open "Open file" (inc c-open))
-          (make-menu-executor 'm-close div-close "Close file" (inc c-close))
-          (make-menu-executor 'm-copy div-copy "Edit Copy" (inc c-copy))
-          (make-menu-executor 'm-cut div-cut "Edit Cut" (inc c-cut))
-          (make-menu-executor 'm-paste div-paste "Edit Paste" (inc c-paste))
-
-          (send this connect-menu! 'm-start
-                (λ () (send this start-counter)))
-          
-          (send this connect-menu! 'm-stop
-                (λ () (send this reset-counter)))
-
-          (send this connect-menu! 'm-prefs
-                (λ () (send this prefs)))
-
-          (send this connect-menu! 'm-select-dir
-                (λ () (send this choose-dir)))
-                                     
-          )
-        )|#
+      
+      (displayln "page-loaded done")
+      )
 
     (begin
       (displayln "Yes this works!")
diff --git a/info.rkt b/info.rkt
index b5d76ad..50e33af 100644
--- a/info.rkt
+++ b/info.rkt
@@ -1,18 +1,23 @@
 #lang info
 
 (define pkg-authors '(hnmdijkema))
-(define version "0.2.20")
+(define version "0.1.1")
 (define license 'MIT)   
 (define collection "racket-webview")
 (define pkg-desc "racket-webview - A Web Based GUI library, based on a Qt WebEngine backend")
 
 (define scribblings
   '(
-    ("scrbl/web-racket.scrbl" () (gui-library) "web-racket")
-    ("scrbl/web-racket-version.scrbl" () (gui-library) "web-racket-version")
-    ("scrbl/web-wire.scrbl" () (gui-library) "web-wire")
-    ("scrbl/webui-wire-download.scrbl" () (gui-library) "webui-wire-download")
-    ("scrbl/webui-wire-ipc.scrbl" () (gui-library) "webui-wire-ipc")
+    ("scrbl/racket-webview-qt.scrbl" () (gui-library) "racket-webview-qt")
+    ("scrbl/racket-webview.scrbl" () (gui-library) "racket-webview")
+    ("scrbl/wv-context.scrbl" () (gui-library) "wv-context")
+    ("scrbl/wv-element.scrbl" () (gui-library) "wv-element")
+    ("scrbl/wv-input.scrbl" () (gui-library) "wv-input")
+    ("scrbl/wv-settings.scrbl" () (gui-library) "wv-settings")
+    ("scrbl/wv-window.scrbl" () (gui-library) "wv-window")
+    ("scrbl/rgba.scrbl" () (gui-library) "rgba")
+    "scrbl/rktwebview-api.scrbl" 
+    "scrbl/rktwebviewqt-internals.scrbl"
     )
   )
 
@@ -36,3 +41,4 @@
     "scribble-lib"
     "net-doc"
     ))
+
diff --git a/js/boilerplate.css b/js/boilerplate.css
new file mode 100644
index 0000000..a326381
--- /dev/null
+++ b/js/boilerplate.css
@@ -0,0 +1,3 @@
+body {
+	font-family: sans-serif;
+}
diff --git a/js/boilerplate.js b/js/boilerplate.js
index bc4124b..5b0e7f5 100644
--- a/js/boilerplate.js
+++ b/js/boilerplate.js
@@ -2,7 +2,11 @@
 if (window.rkt_event_queue === undefined) { window.rkt_event_queue = []; }
 
 window.rkt_put_evt = function(evt) {
+   evt.timestamp = Date.now();
    window.rkt_event_queue.push(evt);
+   if (window.rkt_evt_frame_el) {
+      window.rkt_evt_frame_win.print();
+   }
 };
 
 window.rkt_event_info = function(e, id, evt) {
diff --git a/js/menu.css b/js/menu.css
new file mode 100644
index 0000000..2f56524
--- /dev/null
+++ b/js/menu.css
@@ -0,0 +1,113 @@
+div.menubar {
+   display: flex;
+   align-items: center;
+   width: 100%;
+   top: 0;
+   left: 0;
+   height: 2em;
+   background: #e0e0e0;
+   border-bottom: 1px solid black;
+   margin-bottom: 2px;
+}
+
+div.menubar-item {
+   display: inline-block;
+   height: 100%;
+   align-content: center;
+   padding-left: 0.5em;
+   padding-right: 0.5em;
+   cursor: default;
+}
+
+div.menu, div.submenu {
+   display: flex;
+   flex-direction: column;
+   background: #e0e0e0;
+   border: 1px solid black;
+   z-index: 9999;
+   margin-top: 0.4em;
+   margin-left: -0.5em;
+   position: absolute;
+}
+
+div.submenu {
+   position: absolute;
+   left: calc(100% + 1em);
+   top: 1em;
+}
+
+div.menu-item {
+   min-width: 150px;
+   height: 2em;
+   padding-left: 0.5em;
+   align-content: center;
+   align-items: center;
+   display: flex;
+   cursor: default;
+}
+
+div.menu-item span.menu-icon {
+   width: 2em;
+   height: 2em;
+   padding: 0;
+   margin: 0;
+   display: flex;
+   padding-left: 3px;
+}
+
+div.menu-item span.menu-name {
+   padding-left: 0.25em;
+   display: inline-block;
+   padding-right: 0.5em;
+}
+
+div.menu-item span.menu-submenu {
+   float: right;
+}
+
+span.menu-icon img {
+   width: 85%;
+   height: 85%;
+   align-self: center;
+}
+
+div.menu-item.separator {
+   border-top: 1px solid black;
+}
+
+div.menubar-item:hover, div.menu-item:hover {
+   background: #c0c0c0;;
+}
+
+.popup-menu, .popup-submenu {
+	display: flex;
+	flex-direction: column;
+	margin: 5px;
+	padding: 5px;
+	position: absolute;
+	z-index: 9999;
+	border: 1px solid black;
+	background: #e0e0e0;
+	color: black;
+}
+
+.popup-submenu {
+	display: none;
+}
+
+.menubar .menu-item span.menu-icon, .popup-menu .menu-item span.menu-icon {
+	min-width: unset;
+	width: unset;
+}
+
+.menubar .menu-item {
+	min-width: unset;
+	width: unset;
+	color: black;
+}
+
+.menu-item span.menu-name {
+	text-wrap: nowrap;
+}
+
+
diff --git a/js/menu.js b/js/menu.js
new file mode 100644
index 0000000..12521b0
--- /dev/null
+++ b/js/menu.js
@@ -0,0 +1,132 @@
+
+
+window._web_wire_popup_menu = function(menu, x = -1, y = -1, kind = 'popup') {
+    if (menu.id == '#f') { menu.id = null; }
+    let menu_id = (kind == 'popup') ? '@@popup-menu@@' : '@@menubar@@';
+    let submenu_els = [];
+    let triggerMenuItem;
+    let clearPopupMenu = function() {
+        if (kind == 'popup') {
+            let el = document.getElementById(menu_id);
+            if (el !== null) {
+                el.innerHTML = '';
+                el.style.display = 'none';
+            }
+            if (menu.id !== null) {
+                // Delay this trigger, because one could have choosen a menu item and we want this
+                // to be triggered before the clear command is send.
+                // But if no menu item has been selected, the clear command should
+                // eventually be send.
+                setTimeout(function () {
+                    console.log("Sending clear trigger for menu clearance : " + menu.id);
+                    let obj = { evt: 'menu-item-choosen', id: menu.id, menu_item: menu.id };
+                    window.rkt_put_evt(obj);
+                }, 250);
+            }
+        } else {
+            // hide all submenus
+            submenu_els.forEach(function (el) { el.style.display = 'none'; });
+        }
+    };
+    triggerMenuItem = function(id) {
+        console.log("Triggering menu item : " + id);
+        let obj = { evt: 'menu-item-choosen', id: id, menu_item: id };
+        window.rkt_put_evt(obj);
+    };
+    let showSubMenu = function(menu_el, item_el, el, parent_type) {
+        if (parent_type == 'menu') {
+            el.style.display = 'flex';
+            let rect = item_el.getBoundingClientRect();
+            let r = rect.left;
+            let t = rect.height;
+            el.style.left = r + 'px';
+            el.style.top = t + 'px';
+        } else {
+            el.style.display = "flex";
+            let rect = menu_el.getBoundingClientRect();
+            let irect =item_el.getBoundingClientRect();
+            let r = rect.width + 5;
+            let t = irect.y - rect.y;
+            el.style.left =  r + "px";
+            el.style.top = t + "px";
+        }
+    };
+    let hideSubMenu = function(el) { el.style.display = "none"; };
+    let makePopupMenu = function(el, menu, visible, type) {
+        let i;
+        let N = menu.length;
+        for(i = 0; i < N; i++) {
+            let item = menu[i];
+            let item_el = document.createElement("div");
+            item_el.id = item.id;
+            item_el.classList.add("menu-item");
+            let item_el_icon = document.createElement('span');
+            item_el_icon.classList.add("menu-icon");
+            if (item.icon) {
+                let icon_img = document.createElement('img');
+                icon_img.setAttribute('src', item.icon);
+                item_el_icon.appendChild(icon_img);
+            }
+            if (item.separator) {
+                item_el.classList.add("separator");
+            }
+            let item_el_name = document.createElement('span');
+            item_el_name.classList.add('menu-name');
+            item_el_name.innerHTML = item.name;
+            let item_el_submenu = document.createElement('span');
+            item_el_submenu.classList.add('menu-submenu');
+            if (item.submenu) {
+                if (type == 'submenu' || kind == 'popup') {
+                    item_el_submenu.innerHTML = '&gt;';
+                }
+                item_el.setAttribute('type', 'submenu');
+                let submenu_el = document.createElement("div");
+                submenu_els.push(submenu_el);
+                submenu_el.classList.add("submenu");
+                submenu_el.classList.add("menu");
+                item_el.appendChild(submenu_el);
+                submenu_el.style.display = 'none';
+                makePopupMenu(submenu_el, item.submenu.menu, false, 'submenu');
+                item_el.addEventListener('mouseenter', function () { showSubMenu(el, item_el, submenu_el, type); });
+                item_el.addEventListener('mouseleave', function () { hideSubMenu(submenu_el); });
+            } else {
+                item_el.setAttribute('type', 'item');
+                item_el.addEventListener('click', function() { triggerMenuItem(item.id); });
+            }
+            item_el.appendChild(item_el_icon);
+            item_el.appendChild(item_el_name);
+            item_el.appendChild(item_el_submenu);
+            el.appendChild(item_el);
+        }
+    };
+    let el = document.getElementById(menu_id);
+    if (el === null) {
+        el = document.createElement("div");
+        el.id = menu_id;
+        el.classList.add((kind == 'popup') ? "popup-menu" : "menubar");
+        if (kind == 'popup') {
+            el.classList.add("menu");
+            document.body.appendChild(el);
+        } else {
+            document.body.prepend(el);
+        }
+    } else {
+        el.innerHTML = '';
+    }
+    makePopupMenu(el, menu.menu, true, 'menu');
+    el.style.left = x + "px";
+    el.style.top = y + "px";
+    el.style.display = "flex";
+    let clearer_f = function() {
+        clearPopupMenu();
+        document.body.removeEventListener('click', clearer_f);
+        document.body.removeEventListener('contextmenu', clearer_f);
+    };
+    document.body.addEventListener('click', clearer_f);
+    document.body.addEventListener('contextmenu', clearer_f);
+};
+
+window._web_wire_menu = function(_menubar) {
+    let menubar = JSON.parse(_menubar);
+    window._web_wire_popup_menu(menubar, -1, -1, 'menubar');
+};
diff --git a/main.rkt b/main.rkt
index 97d324f..bb44d12 100644
--- a/main.rkt
+++ b/main.rkt
@@ -6,12 +6,18 @@
 (require "private/wv-dialog.rkt")
 (require "private/wv-element.rkt")
 (require "private/wv-input.rkt")
+(require "private/rgba.rkt")
+(require "private/mimetypes.rkt")
+(require "private/menu.rkt")
 
 (provide (all-from-out "private/wv-context.rkt"
                        "private/wv-window.rkt"
                        "private/wv-dialog.rkt"
                        "private/wv-element.rkt"
                        "private/wv-input.rkt"
+                       "private/rgba.rkt"
+                       "private/mimetypes.rkt"
+                       "private/menu.rkt"
                        )
          webview-set-loglevel
          webview-version
diff --git a/private/lib/linux/x86_64/librktwebview.so b/private/lib/linux/x86_64/librktwebview.so
index 8a3dc76..68053b3 100755
Binary files a/private/lib/linux/x86_64/librktwebview.so and b/private/lib/linux/x86_64/librktwebview.so differ
diff --git a/private/lib/linux/x86_64/rktwebview_prg b/private/lib/linux/x86_64/rktwebview_prg
index b8db3e4..53c74f5 100755
Binary files a/private/lib/linux/x86_64/rktwebview_prg and b/private/lib/linux/x86_64/rktwebview_prg differ
diff --git a/private/menu.rkt b/private/menu.rkt
index f36f55f..f3170d6 100644
--- a/private/menu.rkt
+++ b/private/menu.rkt
@@ -1,60 +1,72 @@
 (module menu racket/base
 
-  (require json)
+  (require json
+           net/url)
   
-  (provide menu
-           menu-item
-           is-menu?
-           menu-set-callback!
-           menu-set-icon!
-           menu-set-title!
-           menu->json
-           with-menu-item
-           menu-for-each
-           ww-menu-item-callback
-           ww-menu-item-id
-           ww-menu-id
+  (provide wv-menu
+           wv-menu-item
+           is-wv-menu?
+           wv-menu-set-callback!
+           wv-menu-set-icon!
+           wv-menu-set-title!
+           wv-menu->json
+           with-wv-menu-item
+           wv-menu-for-each
+           wv-menu-item-callback
+           wv-menu-item-id
+           wv-menu-id
            )
 
 
-  (define-struct ww-menu-item
-    (id [title #:mutable] [icon-file #:mutable] [callback #:mutable] [submenu #:mutable] [separator #:mutable])
+  
+  (define-struct ww-menu-item*
+    (id [title #:mutable] [icon-url #:mutable] [callback #:mutable] [submenu #:mutable] [separator #:mutable])
     #:transparent)
   
-  (define-struct ww-menu
+  (define-struct ww-menu*
     (id [items #:mutable])
     #:transparent
     )
 
-  (define (is-menu? mnu)
-    (if (ww-menu? mnu)
-        (if (list? (ww-menu-items mnu))
+
+  (define (wv-menu-item-callback mi)
+    (ww-menu-item*-callback mi))
+
+  (define (wv-menu-item-id mi)
+    (ww-menu-item*-id mi))
+
+  (define (wv-menu-id m)
+    (ww-menu*-id m))
+  
+  (define (is-wv-menu? mnu)
+    (if (ww-menu*? mnu)
+        (if (list? (ww-menu*-items mnu))
             (letrec ((f (lambda (m)
                           (if (null? m)
                               #t
-                              (if (ww-menu-item? (car m))
-                                  (if (eq? (ww-menu-item-submenu (car m)) #f)
+                              (if (ww-menu-item*? (car m))
+                                  (if (eq? (ww-menu-item*-submenu (car m)) #f)
                                       (f (cdr m))
-                                      (and (is-menu? (ww-menu-item-submenu (car m)))
+                                      (and (is-wv-menu? (ww-menu-item*-submenu (car m)))
                                            (f (cdr m))))
                                   #f)
                               ))
                         ))
-              (f (ww-menu-items mnu)))
+              (f (ww-menu*-items mnu)))
             #f)
         #f))
 
-  (define (menu . items)
+  (define (wv-menu . items)
     (let ((menu-id #f))
       (when (symbol? (car items))
         (set! menu-id (car items))
         (set! items (cdr items)))
       (when (list? (car items))
         (set! items (car items)))
-      (make-ww-menu menu-id items)))
+      (make-ww-menu* menu-id items)))
 
-  (define (menu-item id title
-                     #:icon-file [icon-file #f]
+  (define (wv-menu-item id title
+                     #:icon-url [icon-url #f]
                      #:callback [callback (lambda args #t)]
                      #:submenu [submenu #f]
                      #:separator [separator #f])
@@ -62,47 +74,49 @@
       (error "menu-item needs an id of symbol?"))
     (unless (string? title)
       (error "menu-item needs a title of string?"))
-    (unless (or (eq? icon-file #f) (string? icon-file) (path? icon-file))
+    (unless (or (eq? icon-url #f) (string? icon-url) (url? icon-url))
       (error "menu-item's optional argument icon-file must be #f,  string? or path?"))
-    (unless (or (eq? submenu #f) (is-menu? submenu))
+    (unless (or (eq? submenu #f) (is-wv-menu? submenu))
       (error "menu-item's optional argument submenu must be #f or is-menu?"))
     (unless (boolean? separator)
       (error "menu-item's optional argument separator must be boolean?"))
-    (make-ww-menu-item id title icon-file callback submenu separator))
+    (let ((u (if (url? icon-url) (url->string icon-url) icon-url)))
+      (make-ww-menu-item* id title u callback submenu separator))
+    )
 
-  (define (menu->hash menu . for-json)
+  (define (wv-menu->hash menu . for-json)
     (let ((fj (if (null? for-json) #f (car for-json))))
-      (unless (is-menu? menu)
+      (unless (is-wv-menu? menu)
         (error "menu->hash must be called with a menu"))
-      (let* ((items (ww-menu-items menu))
+      (let* ((items (ww-menu*-items menu))
              (r (map (λ (item)
                        (let ((h (make-hasheq)))
-                         (hash-set! h 'id (format "~a" (ww-menu-item-id item)))
-                         (hash-set! h 'name (ww-menu-item-title item))
-                         (unless (eq? (ww-menu-item-icon-file item) #f)
-                           (hash-set! h 'icon (ww-menu-item-icon-file item)))
-                         (unless (eq? (ww-menu-item-submenu item) #f)
-                           (hash-set! h 'submenu (menu->hash (ww-menu-item-submenu item) fj)))
-                         (unless (eq? (ww-menu-item-separator item) #f)
+                         (hash-set! h 'id (format "~a" (ww-menu-item*-id item)))
+                         (hash-set! h 'name (ww-menu-item*-title item))
+                         (unless (eq? (ww-menu-item*-icon-url item) #f)
+                           (hash-set! h 'icon (ww-menu-item*-icon-url item)))
+                         (unless (eq? (ww-menu-item*-submenu item) #f)
+                           (hash-set! h 'submenu (wv-menu->hash (ww-menu-item*-submenu item) fj)))
+                         (unless (eq? (ww-menu-item*-separator item) #f)
                            (hash-set! h 'separator #t))
                          h
                          )) items))
              )
         (let ((h (make-hasheq)))
           (hash-set! h 'menu r)
-          (hash-set! h 'id (if fj (format "~a" (ww-menu-id menu)) (ww-menu-id menu)))
+          (hash-set! h 'id (if fj (format "~a" (ww-menu*-id menu)) (ww-menu*-id menu)))
           h))))
 
-  (define (menu-for-each menu cb)
-    (let ((items (ww-menu-items menu)))
+  (define (wv-menu-for-each menu cb)
+    (let ((items (ww-menu*-items menu)))
       (letrec ((f (λ (items)
                     (if (null? items)
                         #t
                         (let ((item (car items)))
-                          (let ((submenu (ww-menu-item-submenu item)))
+                          (let ((submenu (ww-menu-item*-submenu item)))
                             (if (eq? submenu #f)
                                 (cb item)
-                                (menu-for-each submenu cb)))
+                                (wv-menu-for-each submenu cb)))
                           (f (cdr items))
                           )
                         )
@@ -110,23 +124,23 @@
                   ))
         (f items))))
 
-  (define (menu->json menu)
+  (define (wv-menu->json menu)
     (let ((o (open-output-string)))
-      (write-json (menu->hash menu #t) o)
+      (write-json (wv-menu->hash menu #t) o)
       (get-output-string o)))
 
-  (define (find-menu-item menu id)
-    (let ((items (ww-menu-items menu)))
+  (define (find-wv-menu-item menu id)
+    (let ((items (ww-menu*-items menu)))
       (letrec ((f (λ (items)
                     (if (null? items)
                         #f
                         (let ((item (car items)))
-                          (if (eq? (ww-menu-item-id item) id)
+                          (if (eq? (ww-menu-item*-id item) id)
                               item
-                              (let ((submenu (ww-menu-item-submenu item)))
+                              (let ((submenu (ww-menu-item*-submenu item)))
                                 (if (eq? submenu #f)
                                     (f (cdr items))
-                                    (let ((found-item (find-menu-item submenu id)))
+                                    (let ((found-item (find-wv-menu-item submenu id)))
                                       (if (eq? found-item #f)
                                           (f (cdr items))
                                           found-item))
@@ -136,37 +150,38 @@
                   ))
         (f items))))
 
-  (define (with-menu-item menu id cb)
-    (unless (is-menu? menu)
+  (define (with-wv-menu-item menu id cb)
+    (unless (is-wv-menu? menu)
       (error "menu must be of is-menu?"))
     (unless (symbol? id)
       (error "id must be of symbol?"))
-    (let ((item (find-menu-item menu id)))
+    (let ((item (find-wv-menu-item menu id)))
       (if (eq? item #f)
           (error (format "cannot find id'~a in given menu" id))
           (cb item)))
     menu)
       
-  (define (menu-set-title! menu id title)
+  (define (wv-menu-set-title! menu id title)
     (unless (string? title)
       (error "title must be of string?"))
-    (with-menu-item menu id
+    (with-wv-menu-item menu id
       (λ (item)
-        (set-ww-menu-item-title! item title))))
+        (set-ww-menu-item*-title! item title))))
   
-  (define (menu-set-icon! menu id icon)
-    (unless (or (eq? icon #f) (path? icon) (string? icon))
+  (define (wv-menu-set-icon! menu id icon-url)
+    (unless (or (eq? icon-url #f) (url? icon-url) (string? icon-url))
       (error "title must be of #f, string? or path?"))
-    (with-menu-item menu id
+    (with-wv-menu-item menu id
       (λ (item)
-        (set-ww-menu-item-icon-file! item icon))))
+        (let ((u (if (url? icon-url) (url->string icon-url) icon-url)))
+          (set-ww-menu-item*-icon-url! item u)))))
 
-  (define (menu-set-callback! menu id cb)
+  (define (wv-menu-set-callback! menu id cb)
     (unless (procedure? cb)
       (error "callback must be of procedure?"))
-    (with-menu-item menu id
+    (with-wv-menu-item menu id
       (λ (item)
-        (set-ww-menu-item-callback! item cb))))
+        (set-ww-menu-item*-callback! item cb))))
           
   ); end of module
 
diff --git a/private/racket-webview-qt.rkt b/private/racket-webview-qt.rkt
index b8a6460..3fa84f7 100644
--- a/private/racket-webview-qt.rkt
+++ b/private/racket-webview-qt.rkt
@@ -590,7 +590,7 @@
 ;                                      )))))
       (let ((handle (make-rkt-wv wv evt-queue evt-callback #t close-callback)))
         (thread (λ ()
-                  (sleep 1)
+                  (sleep 0.01)
                   (letrec ((f (λ ()
                               (let ((r (rkt-process-events handle)))
                                 (if (eq? r 'quit)
diff --git a/private/racket-webview-version.rkt b/private/racket-webview-version.rkt
index adee044..9ded978 100644
--- a/private/racket-webview-version.rkt
+++ b/private/racket-webview-version.rkt
@@ -7,5 +7,5 @@
 
 (define webview-major 0)
 (define webview-minor 1)
-(define webview-patch 0)
+(define webview-patch 1)
 
diff --git a/private/racket-webview.rkt b/private/racket-webview.rkt
index f797406..0e4b7e7 100644
--- a/private/racket-webview.rkt
+++ b/private/racket-webview.rkt
@@ -5,6 +5,7 @@
          "utils.rkt"
          "mimetypes.rkt"
          "rgba.rkt"
+         "menu.rkt"
          finalizer
          racket/async-channel
          web-server/http
@@ -73,6 +74,8 @@
          webview-set-html!
          webview-base-url
 
+         webview-set-menu!
+
          webview-set-innerHTML!
          
          webview-set-value!
@@ -105,6 +108,7 @@
          
          webview-standard-file-getter
          webview-default-boilerplate-js
+         webview-default-boilerplate-css
 
          webview-version
          webview-info
@@ -123,16 +127,38 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (define-runtime-path js-path "../js")
+(define-runtime-path css-path "../js")
 
 (define (webview-default-boilerplate-js . custom-js)
-  (let ((file (build-path js-path "boilerplate.js")))
-    (let ((bjs (file->string file)))
+  (let ((file (build-path js-path "boilerplate.js"))
+        (menu-js-file (build-path js-path "menu.js")))
+    (let ((bjs (file->string file))
+          (mjs (file->string menu-js-file))
+          )
       (let ((js (string-append bjs
+                               mjs
                                (if (null? custom-js)
                                    ""
                                    ((car custom-js))))))
         js))))
 
+(define (webview-default-boilerplate-css . custom-css)
+  (let ((file (build-path css-path "boilerplate.css"))
+        (menu-css-file (build-path css-path "menu.css")))
+    (let ((bcss (file->string file))
+          (mcss (file->string menu-css-file))
+          )
+      (let ((css (string-append bcss
+                                mcss
+                                (if (null? custom-css)
+                                    ""
+                                    ((car custom-css)))
+                                )
+                 )
+            )
+        css))))
+
+
 (define-struct wv-context
   ([context #:mutable]
    [port #:mutable]
@@ -142,6 +168,7 @@
    [request-count #:mutable]
    [sec-token-cache #:mutable]
    [cert-ou-token #:mutable]
+   [boilerplate-css #:mutable]
    )
   #:transparent
   )
@@ -153,16 +180,16 @@
    )
   #:transparent)
 
+(define re_head #px"[<][/][Hh][eE][aA][dD][>]")
+
 (define (process-html context path out)
   (let ((html (file->string path)))
-    (display html out)))
-;        (boilerplate-js ((wv-context-boilerplate-js wv-win-handle))))
-;    (set! html (string-replace html "<head>"
-;                               (string-append "<head>" "\n"
-;                                              "<script>" "\n"
-;                                              boilerplate-js "\n"
-;                                              "</script>" "\n")))
-;    (display html out)))
+    (let ((html* (regexp-replace re_head html 
+                                 (string-append "<style>\n"
+                                                (wv-context-boilerplate-css context)
+                                                "\n</style>\n"
+                                                "</head>"))))
+      (display html* out))))
 
 (define (process-file context ext path out)
   (let ((content (file->bytes path)))
@@ -414,11 +441,13 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (define/contract (webview-new-context file-getter
-                                      #:boilerplate-js [bj (webview-default-boilerplate-js)])
-  (->* (procedure?) (#:boilerplate-js string?) wv-context?)
+                                      #:boilerplate-js [bj (webview-default-boilerplate-js)]
+                                      #:boilerplate-css [bc (webview-default-boilerplate-css)])
+  (->* (procedure?) (#:boilerplate-js string? #:boilerplate-css string?) wv-context?)
   (let* ((h (make-wv-context 0 0 file-getter #f #f 0
                              (make-lru 250 #:cmp eq?)
                              (symbol->string (make-security-token))
+                             bc
                              ))
          (cert (generate-self-signed-cert 2048 365 '("127.0.0.1" "localhost")
                                           "NL" "Dijkema"
@@ -497,6 +526,17 @@
       )
   )
 
+(define/contract (webview-set-menu! wv menu)
+  (-> wv-win? is-wv-menu? symbol?)
+  (let* ((json (wv-menu->json menu))
+         (js (string-append "window._web_wire_menu('"
+                            json
+                            "');"))
+         )
+    (webview-run-js wv js)
+    )
+  )
+
 (define (loglevel? x)
   (and (symbol? x)
        (or (eq? x 'error) (eq? x 'info) (eq? x 'debug) (eq? x 'warning))))
diff --git a/private/wv-context.rkt b/private/wv-context.rkt
index 47c4f29..b98d11b 100644
--- a/private/wv-context.rkt
+++ b/private/wv-context.rkt
@@ -13,7 +13,9 @@
      base-path
      [file-getter (webview-standard-file-getter base-path)]
      [context-js  (λ () "")]
+     [context-css (λ () "")]
      [boilerplate-js (webview-default-boilerplate-js context-js)]
+     [boilerplate-css (webview-default-boilerplate-css context-css)]
      [ini (error "You need to provide a 'ini' file settings interface for settings, e.g. simple-ini/class")]
      )
      
@@ -35,7 +37,8 @@
     (begin
       (set! wv-context
             (webview-new-context file-getter
-                                 #:boilerplate-js boilerplate-js))
+                                 #:boilerplate-js boilerplate-js
+                                 #:boilerplate-css boilerplate-css))
       (set! settings-obj (new wv-settings% [ini ini] [wv-context 'global]))
       )
     )
diff --git a/private/wv-dialog.rkt b/private/wv-dialog.rkt
index fde2f6b..33ce322 100644
--- a/private/wv-dialog.rkt
+++ b/private/wv-dialog.rkt
@@ -38,9 +38,9 @@
             (let ((x (inexact->exact (round (exact->inexact (+ px xx)))))
                   (y (inexact->exact (round (exact->inexact (+ py yy)))))
                   )
-              (displayln "move")
+              (displayln (format "move ~a ~a" x y))
               (send this move x y)
-              (displayln "resize")
+              (displayln (format "resize ~a ~a" x y))
               (send this resize dw dh)
               )
             )
diff --git a/private/wv-window.rkt b/private/wv-window.rkt
index 77cf0e9..726b841 100644
--- a/private/wv-window.rkt
+++ b/private/wv-window.rkt
@@ -145,6 +145,7 @@
     (define (event-handler wv evt)
       (let ((event (hash-ref evt 'event 'unknown-event))
             )
+        (displayln evt)
         (cond
         ((eq? event 'resize)
          (send this resized (hash-ref evt 'w) (hash-ref evt 'h)))
@@ -163,7 +164,7 @@
          (let* ((je (hash-copy (hash-ref evt 'js-evt)))
                 (e (make-hash)))
            (hash-set! e 'evt (string->symbol (hash-ref je 'evt)))
-           (hash-set! e 'id (string->symbol (hash-ref je 'id #f)))
+           (hash-set! e 'id (string->symbol (hash-ref je 'id "nil")))
            (hash-set! e 'data (hash-ref je 'js_evt (make-hash)))
            (hash-set! e 'event 'js-evt)
            (when (eq? (send this js-event e) 'wv-unhandled-js-event)
@@ -244,7 +245,6 @@
             )
         )
       )
-            
 
     ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
     ;; Commands
@@ -257,6 +257,15 @@
     (define/public (remove-class! selector-or-id cl)
       (webview-remove-class! wv selector-or-id cl)
       this)
+
+    (define/public (set-menu! menu)
+      (webview-set-menu! wv menu)
+      this)
+
+    (define/public (connect-menu! id callback)
+      (send this bind! (string->symbol (format "~a" id)) 'menu-item-choosen
+            (λ (el evt data)
+              (callback))))
     
     (define/public (devtools)
       (webview-devtools wv)
diff --git a/rktwebview_qt/rktutils.cpp b/rktwebview_qt/rktutils.cpp
index 4ee17f6..7bf54e1 100644
--- a/rktwebview_qt/rktutils.cpp
+++ b/rktwebview_qt/rktutils.cpp
@@ -27,3 +27,4 @@ QHash<QString, QVariant> mkEvent()
 }
 
 int EventContainer::evt_count = 0;
+qint64 EventContainer::ms_start = -1;
diff --git a/rktwebview_qt/rktutils.h b/rktwebview_qt/rktutils.h
index 402bf34..b1d06fb 100644
--- a/rktwebview_qt/rktutils.h
+++ b/rktwebview_qt/rktutils.h
@@ -4,15 +4,24 @@
 #include <QHash>
 #include <QString>
 #include <QVariant>
+#include <QDateTime>
 
 class EventContainer : public QHash<QString, QVariant>
 {
 private:
     static int evt_count;
+    static qint64 ms_start;
 public:
     EventContainer(const QString &evt) {
+        if (ms_start < 0) {
+            ms_start = QDateTime::currentMSecsSinceEpoch();
+        }
         this->insert("event", evt);
         this->insert("evt-id", ++evt_count);
+
+        qint64 ms = QDateTime::currentMSecsSinceEpoch();
+        this->insert("timestamp", ms);
+        this->insert("elaped", static_cast<double>(ms - ms_start) / 1000.0);
     }
 };
 
diff --git a/rktwebview_qt/rktwebview_qt.cpp b/rktwebview_qt/rktwebview_qt.cpp
index 64044ac..211cafc 100644
--- a/rktwebview_qt/rktwebview_qt.cpp
+++ b/rktwebview_qt/rktwebview_qt.cpp
@@ -59,6 +59,7 @@ void Rktwebview_qt::processCommand(Command *cmd)
                        "window.rkt_evt_frame_el = null;\n"
                        "window.rkt_evt_frame_win = null;\n"
                        "window.rkt_send_event = function(obj) {\n"
+                       "    obj.timestamp = Date.now();\n"
                        "    //console.log('Sending event: ' + obj);\n"
                        "    window.rkt_event_queue.push(obj);\n"
                        "    if (window.rkt_evt_frame_el) {\n"
diff --git a/scrbl/menu.scrbl b/scrbl/menu.scrbl
new file mode 100644
index 0000000..aec90bd
--- /dev/null
+++ b/scrbl/menu.scrbl
@@ -0,0 +1,195 @@
+#lang scribble/manual
+
+@(require racket/base
+          scribble/core
+          (for-label racket/base
+                     racket/string
+                     net/url
+                     json
+                     "../private/menu.rkt"))
+
+@title{menu}
+@author[@author+email["Hans Dijkema" "hans@dijkewijk.nl"]]
+
+@defmodule[menu]
+
+Menu data structures used by the webview library.
+
+This module provides constructors, predicates, traversal helpers, mutation
+operations, and JSON conversion for menu trees.
+
+@section{Overview}
+
+A menu is represented as a tree. A menu consists of menu items, and a menu item
+may optionally contain a submenu.
+
+Menu identifiers are symbols. Menu item titles are strings. Icons are stored as
+strings and may be supplied either as @racket[#f], strings, or URL values.
+
+The module does not display menus itself. It provides the menu data structure
+used by higher layers.
+
+@section{Internal Representation}
+
+Internally, menus are represented by transparent structure values. These
+structure constructors and predicates are not exported directly. The public API
+uses constructor procedures and helper functions operating on those internal
+values.
+
+@section{Predicates}
+
+@defproc[(is-wv-menu? [mnu any/c]) boolean?]{
+
+Returns @racket[#t] if @racket[mnu] is a valid menu tree and @racket[#f]
+otherwise.
+
+A value is recognized as a menu if it is an internal menu structure whose item
+list is a list of internal menu items, and every submenu recursively also
+satisfies @racket[is-wv-menu?].
+}
+
+@section{Constructors}
+
+@defproc[(wv-menu [item-or-id any/c] ...)
+         any/c]{
+
+Creates a menu.
+
+If the first argument is a symbol, it is used as the menu identifier and removed
+from the remaining arguments. Otherwise the menu identifier is @racket[#f].
+
+If the first remaining argument is itself a list, that list is used as the item
+list. Otherwise all remaining arguments are treated as menu items.
+
+This means the following forms are accepted:
+
+@racketblock[
+(wv-menu item ...)
+(wv-menu 'some-id item ...)
+(wv-menu (list item ...))
+(wv-menu 'some-id (list item ...))
+]
+
+The result is a value satisfying @racket[is-wv-menu?].
+}
+
+@defproc[(wv-menu-item [id symbol?]
+                       [title string?]
+                       [#:icon-url icon-url (or/c boolean? string? url?) #f]
+                       [#:callback callback procedure? (λ args #t)]
+                       [#:submenu submenu (or/c boolean? any/c) #f]
+                       [#:separator separator boolean? #f])
+         any/c]{
+
+Creates a menu item.
+
+@racket[id] must be a symbol and @racket[title] must be a string.
+
+@racket[icon-url] must be @racket[#f], a string, or a URL value. If it is a URL
+value, it is converted to a string using @racket[url->string] before being
+stored.
+
+@racket[submenu] must be @racket[#f] or a value satisfying
+@racket[is-wv-menu?].
+
+@racket[separator] must be a boolean.
+
+If any argument does not satisfy these conditions, an exception is raised.
+}
+
+@section{Traversal and Lookup}
+
+@defproc[(wv-menu-for-each [menu any/c] [cb procedure?]) boolean?]{
+
+Traverses @racket[menu] depth-first and calls @racket[cb] for each menu item.
+
+If a menu item contains a submenu, that submenu is traversed recursively.
+
+The callback is invoked only for menu items that are reached by the traversal.
+The function returns @racket[#t].
+}
+
+@defproc[(with-wv-menu-item [menu any/c] [id symbol?] [cb procedure?]) any/c]{
+
+Finds the menu item identified by @racket[id] and applies @racket[cb] to it.
+
+If @racket[menu] does not satisfy @racket[is-wv-menu?], an exception is raised.
+If @racket[id] is not a symbol, an exception is raised.
+If no item with the given id can be found, an exception is raised.
+
+After the callback has been applied, the original @racket[menu] value is
+returned.
+}
+
+@section{Mutation}
+
+@defproc[(wv-menu-set-title! [menu any/c] [id symbol?] [title string?])
+         any/c]{
+
+Sets the title of the menu item identified by @racket[id].
+
+@racket[title] must be a string. The function returns the original
+@racket[menu] value.
+}
+
+@defproc[(wv-menu-set-icon! [menu any/c] [id symbol?]
+                            [icon-url (or/c boolean? string? url?)])
+         any/c]{
+
+Sets the icon URL of the menu item identified by @racket[id].
+
+@racket[icon-url] must be @racket[#f], a string, or a URL value. If it is a URL
+value, it is converted to a string using @racket[url->string] before being
+stored.
+
+The function returns the original @racket[menu] value.
+}
+
+@defproc[(wv-menu-set-callback! [menu any/c] [id symbol?] [cb procedure?])
+         any/c]{
+
+Sets the callback of the menu item identified by @racket[id].
+
+@racket[cb] must be a procedure. The function returns the original
+@racket[menu] value.
+}
+
+@section{Conversion}
+
+@defproc[(wv-menu->json [menu any/c]) string?]{
+
+Converts @racket[menu] to a JSON string.
+
+The conversion first builds a hash-based representation of the menu and then
+writes that representation with @racket[write-json].
+
+In the JSON representation:
+
+@itemlist[#:style 'compact
+ @item{the top-level object contains the keys @racket['menu] and @racket['id]}
+ @item{menu item identifiers are converted to strings}
+ @item{menu item titles are written under the key @racket['name]}
+ @item{an icon is written only if it is not @racket[#f]}
+ @item{a submenu is written recursively only if it is not @racket[#f]}
+ @item{a separator flag is written only if it is not @racket[#f]}]
+
+The @racket['id] field of the top-level menu is also converted to a string in
+the JSON output.
+}
+
+@section{Accessors}
+
+@defproc[(wv-menu-id [m any/c]) any/c]{
+
+Returns the identifier of @racket[m].
+}
+
+@defproc[(wv-menu-item-id [mi any/c]) symbol?]{
+
+Returns the identifier of the menu item @racket[mi].
+}
+
+@defproc[(wv-menu-item-callback [mi any/c]) procedure?]{
+
+Returns the callback associated with the menu item @racket[mi].
+}
\ No newline at end of file
diff --git a/scrbl/mimetypes.scrbl b/scrbl/mimetypes.scrbl
new file mode 100644
index 0000000..9f19776
--- /dev/null
+++ b/scrbl/mimetypes.scrbl
@@ -0,0 +1,60 @@
+#lang scribble/manual
+
+@(require racket/base
+          scribble/core
+          (for-label racket/base
+                     racket/string
+                     racket/file))
+
+@title{mimetypes}
+@author[@author+email["Hans Dijkema" "hans@dijkewijk.nl"]]
+
+@defmodule[mimetypes]
+
+MIME type utilities used by the webview library.
+
+This module provides a mapping from file extensions to MIME types together with
+a function to determine the MIME type of a file path.
+
+@section{Overview}
+
+The module is used by the local HTTPS server to determine the correct
+@tt{Content-Type} header when serving files.
+
+MIME types are determined based on the file extension.
+
+@section{Function: path->mimetype}
+
+@defproc[(path->mimetype [p path-string?]) string?]{
+
+Returns the MIME type associated with @racket[p].
+
+The file extension of @racket[p] is extracted and used to look up the
+corresponding MIME type.
+
+If the extension is not recognized, a default MIME type is returned.
+}
+
+@section{Mapping}
+
+The module contains a predefined mapping from file extensions to MIME types.
+
+Typical mappings include:
+
+@itemlist[#:style 'compact
+ @item{@tt{.html} → @tt{text/html}}
+ @item{@tt{.css} → @tt{text/css}}
+ @item{@tt{.js} → @tt{application/javascript}}
+ @item{@tt{.json} → @tt{application/json}}
+ @item{@tt{.png} → @tt{image/png}}
+ @item{@tt{.jpg}, @tt{.jpeg} → @tt{image/jpeg}}
+ @item{@tt{.svg} → @tt{image/svg+xml}}]
+
+The exact mapping is defined in the source code and can be extended if needed.
+
+@section{Notes}
+
+The returned MIME type is always a string suitable for use in HTTP response
+headers.
+
+File extensions are interpreted case-insensitively.
diff --git a/scrbl/racket-webview-intro.scrbl b/scrbl/racket-webview-intro.scrbl
new file mode 100644
index 0000000..f1235e2
--- /dev/null
+++ b/scrbl/racket-webview-intro.scrbl
@@ -0,0 +1,64 @@
+#lang scribble/manual
+
+@(require racket/base
+          scribble/core
+          scribble/manual
+          (for-label racket/base
+                     racket/class
+                     racket/string
+                     racket/file
+                     net/url
+                     "../private/wv-context.rkt"
+                     "../private/wv-window.rkt"
+                     "../private/wv-element.rkt"
+                     "../private/wv-input.rkt"
+                     "../private/wv-dialog.rkt"
+                     "../private/wv-settings.rkt"
+                     "../private/rgba.rkt"
+                     "../private/mimetypes.rkt"))
+
+@title{Racket Webview}
+@author[@author+email["Hans Dijkema" "hans@dijkewijk.nl"]]
+
+@section{Overview}
+
+Racket Webview is a class-oriented webview library built on top of a Qt-based
+native runtime.
+
+The library is layered. At the lowest level a native FFI layer is used. On top
+of that, @racketmodname[racket-webview] provides a functional API. The
+class-oriented API described in this manual is built from smaller modules on top
+of that layer.
+
+@section{Core Concepts}
+
+The library is structured around two main concepts:
+
+@itemlist[#:style 'compact
+ @item{a context, representing an isolated runtime with its own local HTTPS server}
+ @item{a window, representing a webview instance within such a context}]
+
+A context manages local file serving, certificates, and settings. A window loads
+content, handles events, and provides access to DOM elements.
+
+@section{Modules}
+
+The public API is divided into the following modules:
+
+@itemlist[#:style 'compact
+ @item{@racketmodname[wv-context] — context creation and settings access}
+ @item{@racketmodname[wv-window] — window lifecycle, events, navigation, and dialogs}
+ @item{@racketmodname[wv-element] — DOM element wrapper}
+ @item{@racketmodname[wv-input] — typed input-element wrappers}
+ @item{@racketmodname[wv-dialog] — dialog windows}
+ @item{@racketmodname[wv-settings] — settings wrapper}
+ @item{@racketmodname[rgba] — RGBA color values}
+ @item{@racketmodname[mimetypes] — MIME type lookup}]
+
+@section{Typical Usage}
+
+A typical application creates a @racket[wv-context%] object and then creates one
+or more @racket[wv-window%] objects within that context. DOM elements are
+retrieved using @racket[(send window element 'id)], after which their state can
+be read or modified using the element and input wrapper classes. Interaction
+with the browser is handled through event callbacks and bindings.
\ No newline at end of file
diff --git a/scrbl/racket-webview.scrbl b/scrbl/racket-webview.scrbl
index 1c9606d..6818aa2 100644
--- a/scrbl/racket-webview.scrbl
+++ b/scrbl/racket-webview.scrbl
@@ -27,25 +27,38 @@ The module builds on the lower-level bindings from
 
 A context encapsulates a native webview context together with a local HTTPS
 server. Windows are created within a context and communicate through events and
-JavaScript calls.
+JavaScript calls. When an HTML file is
+served, the context's CSS boilerplate is injected immediately before the
+closing @tt{</head>} tag.
 
 @section{Contexts}
 
+
 @defproc[(webview-new-context
           [file-getter procedure?]
           [#:boilerplate-js boilerplate-js string?
-                            (webview-default-boilerplate-js)])
+                            (webview-default-boilerplate-js)]
+          [#:boilerplate-css boilerplate-css string?
+                             (webview-default-boilerplate-css)])
          wv-context?]{
 
 Creates a new context.
 
+The function:
+
 @itemlist[#:style 'compact
  @item{starts a local HTTPS server on a dynamically chosen port}
  @item{generates a self-signed certificate}
  @item{creates a native context}
- @item{installs the provided JavaScript boilerplate}]
+ @item{installs the provided JavaScript boilerplate in the native context}
+ @item{stores the provided CSS boilerplate in the context}]
 
-The @racket[file-getter] procedure maps request paths to files.
+The @racket[file-getter] procedure maps request paths to files. The
+@racket[#:boilerplate-js] argument provides JavaScript support code passed to
+the native context constructor. The javascript is injected by the native
+QtWebEngine software. The @racket[#:boilerplate-css] argument provides
+CSS boilerplate that is stored in the context and injected into served HTML
+documents.
 
 Certificate files are removed automatically when the context is garbage
 collected.
@@ -58,6 +71,7 @@ Returns the base URL of the context.
 This URL can be used to construct URLs from relative path information.
 }
 
+
 @defproc[(wv-context? [v any/c]) boolean?]{
 Recognizes context values.
 }
@@ -147,6 +161,17 @@ Replaces the current document contents.
 X-expressions are converted to strings before being passed to JavaScript.
 }
 
+@defproc[(webview-set-menu! [wv wv-win?] [menu is-wv-menu?])
+         symbol?]{
+
+Installs @racket[menu] in @racket[wv].
+
+The menu is converted to JSON using @racket[wv-menu->json] and then passed to
+the browser by evaluating JavaScript through @racket[webview-run-js].
+
+The result is the symbol returned by @racket[webview-run-js].
+}
+
 @defproc[(webview-set-title! [wv wv-win?] [title string?]) symbol?]{
 Sets the window title.
 }
@@ -525,9 +550,23 @@ Recognizes lists of filter entries.
 
 @section{Utilities}
 
-@defproc[(webview-default-boilerplate-js [f procedure?] ...)
+@defproc[(webview-default-boilerplate-js [custom-js procedure?] ...)
          string?]{
+
 Returns the default JavaScript boilerplate.
+
+The result is constructed by concatenating the contents of @tt{js/*.js}.
+If an additional procedure is supplied, its returned string is appended
+to that JavaScript.
+}
+
+@defproc[(webview-default-boilerplate-css [custom-css procedure?] ...)
+         string?]{
+
+Returns the default CSS boilerplate.
+
+The result is constructed by concatenating the contents of @tt{js/*.css}.
+If an additional procedure is supplied, its returned string is appended to that CSS.
 }
 
 @defproc[(webview-standard-file-getter
diff --git a/scrbl/rgba.scrbl b/scrbl/rgba.scrbl
new file mode 100644
index 0000000..995629f
--- /dev/null
+++ b/scrbl/rgba.scrbl
@@ -0,0 +1,96 @@
+#lang scribble/manual
+
+@(require racket/base
+          scribble/core
+          (for-label racket/base
+                     racket/string
+                     racket/contract))
+
+@title{rgba}
+@author[@author+email["Hans Dijkema" "hans@dijkewijk.nl"]]
+
+@defmodule[rgba]
+
+RGBA color support used by the webview library.
+
+This module exports a transparent @racket[rgba] structure together with
+predicates and conversion procedures for working with CSS-style color values.
+
+@section{Overview}
+
+An @racket[rgba] value represents a color using red, green, blue, and alpha
+components.
+
+The module provides:
+
+@itemlist[#:style 'compact
+ @item{the @racket[rgba] structure type}
+ @item{predicates for validating component values}
+ @item{conversion from strings to @racket[rgba] values}
+ @item{conversion from @racket[rgba] values to CSS color strings}]
+
+The intended external representation is the CSS form:
+
+@racketblock[
+"rgba(r,g,b,a)"
+]
+
+@section{Predicates}
+
+@defproc[(rgba/color? [v any/c]) boolean?]{
+
+Recognizes valid red, green, and blue component values.
+
+A valid color component is an exact integer in the range from @racket[0] to
+@racket[255], inclusive.
+}
+
+@defproc[(rgba/alpha? [v any/c]) boolean?]{
+
+Recognizes valid alpha component values.
+
+A valid alpha component is a real number in the range from @racket[0] to
+@racket[1], inclusive.
+}
+
+@section{Structure Type}
+
+@defstruct*[rgba ([r rgba/color?]
+                  [g rgba/color?]
+                  [b rgba/color?]
+                  [a rgba/alpha?])]{
+
+Represents one RGBA color value.
+
+The fields @racket[r], @racket[g], and @racket[b] are the red, green, and blue
+components. The field @racket[a] is the alpha component.
+
+The structure is transparent.
+}
+
+@section{Conversion}
+
+@defproc[(rgba->string [c rgba?]) string?]{
+
+Converts @racket[c] to a CSS color string.
+
+The result has the form:
+
+@racketblock[
+"rgba(r,g,b,a)"
+]
+}
+
+@defproc[(string->rgba [s string?]) (or/c rgba? #f)]{
+
+Attempts to parse @racket[s] as a CSS RGBA color string.
+
+If parsing succeeds, the result is an @racket[rgba] value. If parsing fails, the
+result is @racket[#f].
+
+The accepted input format is the one produced by @racket[rgba->string], namely:
+
+@racketblock[
+"rgba(r,g,b,a)"
+]
+}
\ No newline at end of file
diff --git a/scrbl/wv-context.scrbl b/scrbl/wv-context.scrbl
index c07e516..87d6083 100644
--- a/scrbl/wv-context.scrbl
+++ b/scrbl/wv-context.scrbl
@@ -24,6 +24,10 @@ windows. It owns the underlying webview context, provides the base URL used by
 those windows, and gives access to persistent settings through
 @racketmodname[wv-settings].
 
+A context stores both JavaScript and CSS boilerplate. The JavaScript boilerplate
+is passed to the native runtime, while the CSS boilerplate is injected into HTML
+documents served by the local HTTPS server.
+
 This module exports the @racket[wv-context%] class.
 
 @defclass[wv-context% object% ()]{
@@ -40,10 +44,17 @@ to access that value, its base URL, and a settings object.
                               (webview-standard-file-getter base-path)]
                  [context-js procedure?
                              (λ () "")]
+                 [context-css procedure?
+                              (λ () "")]
                  [boilerplate-js string?
                                  (webview-default-boilerplate-js context-js)]
+                 [boilerplate-css string?
+                                  (webview-default-boilerplate-css context-css)]
                  [ini any/c
-                      (error "You need to provide a 'ini' file settings interface for settings, e.g. simple-ini/class")])]{
+                      (error
+                       (string-append "You need to provide a 'ini' "
+                                      "file settings interface for "
+                                      "settings, e.g. simple-ini/class"))])]{
 
 Creates a new context object.
 
@@ -56,9 +67,14 @@ The constructor accepts the following initialization fields.
        @racket[(webview-standard-file-getter base-path)].}
  @item{@racket[context-js] is a procedure producing additional JavaScript for
        the context. Its default value is @racket[(λ () "")].}
+ @item{@racket[context-css] is a procedure producing additional CSS for the
+       context. Its default value is @racket[(λ () "")].}
  @item{@racket[boilerplate-js] is the JavaScript boilerplate installed into the
        underlying webview context. Its default value is
        @racket[(webview-default-boilerplate-js context-js)].}
+ @item{@racket[boilerplate-css] is the CSS boilerplate stored in the context
+       and injected into HTML documents. Its default value is
+       @racket[(webview-default-boilerplate-css context-css)].}
  @item{@racket[ini] is the settings backend used to construct the associated
        @racket[wv-settings%] object. No default backend is provided; omitting it
        raises an error.}]
diff --git a/scrbl/wv-dialog.scrbl b/scrbl/wv-dialog.scrbl
new file mode 100644
index 0000000..d83418d
--- /dev/null
+++ b/scrbl/wv-dialog.scrbl
@@ -0,0 +1,83 @@
+#lang scribble/manual
+
+@(require racket/base
+          racket/class
+          scribble/core
+          (for-label racket/base
+                     racket/class
+                     "../private/wv-window.rkt"))
+
+@title{wv-dialog}
+@author[@author+email["Hans Dijkema" "hans@dijkewijk.nl"]]
+
+@defmodule[wv-dialog]
+
+Dialog-window wrapper built on top of @racket[wv-window%].
+
+This module exports the @racket[wv-dialog%] class. It is a specialized window
+class whose initial size and position are derived from its parent window.
+
+@section{Overview}
+
+A @racket[wv-dialog%] object is a @racket[wv-window%] that initializes itself as
+a dialog relative to its parent window.
+
+The class inherits the window lifecycle, event handling, navigation, and dialog
+support from @racket[wv-window%]. Its only specialization in the current source
+is the implementation of @racket[init-size].
+
+@section{Class: wv-dialog%}
+
+@defclass[wv-dialog% wv-window% ()]{
+
+Represents a dialog window centered relative to its parent window.
+
+The class inherits the fields @racket[parent], @racket[settings],
+@racket[wv-context], @racket[html-path], @racket[x], @racket[y],
+@racket[width], and @racket[height] from @racket[wv-window%].
+
+@defconstructor[()]{
+
+Creates a dialog window.
+
+The constructor does not define additional initialization arguments of its own.
+Construction is delegated to @racket[wv-window%] through @racket[super-new].
+}
+
+@defmethod[(init-size) any/c]{
+
+Initializes the dialog size and position relative to its parent window.
+
+The method reads the parent window geometry from the inherited @racket[parent]
+field:
+
+@itemlist[#:style 'compact
+ @item{@racket[x] and @racket[y] of the parent window}
+ @item{@racket[width] and @racket[height] of the parent window}]
+
+It then determines the dialog width and height from @racket[settings], using the
+keys @racket['width] and @racket['height]. If a stored value is absent, the
+constructor fields @racket[width] and @racket[height] are used if present.
+Otherwise both dimensions default to @racket[400].
+
+The dialog position is then computed so that the dialog is centered within the
+parent window:
+
+@racketblock[
+(let ((xx (/ (- pw dw) 2))
+      (yy (/ (- ph dh) 2)))
+  ...)
+]
+
+The resulting coordinates are rounded, converted to exact integers, and applied
+using:
+
+@racketblock[
+(send this move x y)
+(send this resize dw dh)
+]
+
+This method overrides the inherited @racket[init-size] implementation from
+@racket[wv-window%].
+}
+}
\ No newline at end of file
diff --git a/scrbl/wv-window.scrbl b/scrbl/wv-window.scrbl
index 68f81eb..325e48b 100644
--- a/scrbl/wv-window.scrbl
+++ b/scrbl/wv-window.scrbl
@@ -83,7 +83,7 @@ If a parent is supplied, the underlying lower-level parent window is passed to
 @racket[webview-create].
 }
 
-@defmethod[(context) any/c]{
+@defmethod[(context) (is-a?/c wv-context%)]{
 
 Returns the window context object supplied at construction.
 }
@@ -268,6 +268,37 @@ internal cache.
 The returned value is the list produced by @racket[webview-unbind!].
 }
 
+           @defmethod[(set-menu! [menu is-wv-menu?])
+            (is-a?/c wv-window%)]{
+
+Installs @racket[menu] in this window and returns this window.
+
+The accepted argument follows the contract of @racket[webview-set-menu!]. The
+method delegates to:
+
+@racketblock[
+(webview-set-menu! wv menu)
+]
+}
+
+@defmethod[(connect-menu! [id symbol?] [callback procedure?])
+            (is-a?/c wv-window%)]{
+
+Connects @racket[callback] to the menu item identified by @racket[id].
+
+The method installs a binding for the @racket['menu-item-choosen] event by
+delegating to:
+
+@racketblock[
+(send this bind! id 'menu-item-choosen
+      (λ (el evt data)
+        (callback)))
+]
+
+The callback is invoked without arguments when the corresponding menu item is
+chosen.
+}       
+
 @defmethod[(set-title! [title string?]) any/c]{
 
 Sets the window title.