diff --git a/ng-app/package.json b/ng-app/package.json
index bebf1809..10f30f1e 100644
--- a/ng-app/package.json
+++ b/ng-app/package.json
@@ -82,6 +82,7 @@
     "svelte-jsoneditor": "^0.23.8",
     "svelte-spa-router": "^3.3.0",
     "vite-plugin-top-level-await": "^1.3.1",
+    "xml-beautifier": "^0.5.0",
     "y-codemirror.next": "^0.3.5",
     "y-prosemirror": "^1.2.10",
     "y-protocols": "^1.0.1",
diff --git a/ng-app/src/App.svelte b/ng-app/src/App.svelte
index bc5da3b5..f018b5fb 100644
--- a/ng-app/src/App.svelte
+++ b/ng-app/src/App.svelte
@@ -74,7 +74,7 @@
   // };
 
   onMount(async () => {
-    console.log("hide splash", window.supported);
+    //console.log("hide splash", window.supported);
     if (window.supported) {
       window.document.getElementById("splash").className="noshow";
       window.document.getElementById("app").className="";
diff --git a/ng-app/src/apps/MdSource.svelte b/ng-app/src/apps/MdSource.svelte
new file mode 100644
index 00000000..82da84ba
--- /dev/null
+++ b/ng-app/src/apps/MdSource.svelte
@@ -0,0 +1,157 @@
+<!--
+// Copyright (c) 2022-2024 Niko Bonnieure, Par le Peuple, NextGraph.org developers
+// All rights reserved.
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE2 or http://www.apache.org/licenses/LICENSE-2.0>
+// or the MIT license <LICENSE-MIT or http://opensource.org/licenses/MIT>,
+// at your option. All files in the project carrying such
+// notice may not be copied, modified, or distributed except
+// according to those terms.
+-->
+
+<!--
+    We could maybe also use https://ssssota.github.io/svelte-exmarkdown/ for rendering the MD (but to obtain the MD, we need to instantiate Milkdown anyway)
+-->
+
+<script lang="ts">
+    import { onMount, tick, onDestroy } from "svelte";
+    import { 
+      toast_error,
+      toast_success,
+      reset_toasts,
+      display_error,
+      live_discrete_update,
+      discrete_update
+    } from "../store";
+    import { 
+        cur_tab_register_on_save,
+        cur_tab_deregister_on_save,
+        cur_tab_branch_class,
+        set_view_or_edit
+    } from "../tab";
+    import { t } from "svelte-i18n";
+    import{ PencilSquare } from "svelte-heros-v2";
+    
+    import * as Y from 'yjs'
+    
+    import { Editor, editorCtx, rootCtx } from '@milkdown/core';
+    import { collab, collabServiceCtx } from '@milkdown/plugin-collab';
+    import { commonmark } from '@milkdown/preset-commonmark';
+    import { gfm } from '@milkdown/preset-gfm';
+    import markdown from "svelte-highlight/languages/markdown";
+    import Highlight, { LineNumbers } from "svelte-highlight";
+    import "svelte-highlight/styles/github.css";
+    import { getMarkdown } from "@milkdown/utils";
+
+    export let commits = {};
+
+    const ydoc = new Y.Doc()
+
+    let has_content = true;
+    let loading = true;
+
+    let source = "";
+    let editor;
+
+    function process_doc() {
+
+        editor.action((ctx) => {
+            const editor = ctx.get(editorCtx);
+            source = editor.action(getMarkdown());
+        });
+    }
+
+    async function setup() {
+        try {
+            editor = await Editor.make().config((ctx) => {
+                ctx.set(rootCtx, '#mdhiddeneditor')
+            })
+            .use(commonmark)
+            .use(gfm)
+            .use(collab).create();
+        
+            ydoc.on('destroy', async () => {
+                
+            })
+
+            editor.action((ctx) => {
+                const collabService = ctx.get(collabServiceCtx);
+
+                collabService
+                // bind doc
+                .bindDoc(ydoc)
+                // connect yjs with milkdown
+                .connect();
+            });
+
+            has_content = false;
+            let history = commits.discrete?.registerOnUpdate((update) => {
+                Y.applyUpdate(ydoc, update.YXml, {local:true})
+                has_content = true;
+                process_doc();
+            });
+            for (const h of history) {
+                Y.applyUpdate(ydoc, h.YXml, {local:true})
+                has_content = true;
+            }
+            if (has_content) process_doc();
+            loading = false;
+
+        }
+        catch (e){
+            console.log(e)
+        }
+    }
+
+    onMount(async ()=>{
+        await setup();
+
+    });
+
+    onDestroy(async ()=>{
+        ydoc.destroy();
+        commits.discrete?.deregisterOnUpdate();
+        if (editor) await editor.destroy();
+    });
+
+ 
+  </script>
+
+    {#if !has_content}
+        <p class="ml-5">{$t("doc.empty")}</p>
+    {/if}
+
+  {#if loading}
+    <div class="grow flex flex-col justify-center text-primary-700">
+        <svg
+            class="animate-spin mt-4 h-10 w-10 mb-4 mx-auto"
+            xmlns="http://www.w3.org/2000/svg"
+            fill="none"
+            stroke="currentColor"
+            viewBox="0 0 24 24"
+        >
+            <circle
+            class="opacity-25"
+            cx="12"
+            cy="12"
+            r="10"
+            stroke="currentColor"
+            stroke-width="4"
+            />
+            <path
+            class="opacity-75"
+            fill="currentColor"
+            d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
+            />
+        </svg>
+        <p class="text-center">{$t("connectivity.loading")}...</p>
+    </div>
+  {/if}
+
+    {#if source} 
+        <Highlight language={markdown} code={source} class="mb-10" let:highlighted>
+            <LineNumbers {highlighted} wrapLines hideBorder />
+        </Highlight>
+    {/if}
+
+    <div id="mdhiddeneditor" style="display:none;"></div>
\ No newline at end of file
diff --git a/ng-app/src/apps/ProseMirrorEditor.svelte b/ng-app/src/apps/ProseMirrorEditor.svelte
index 527dabc5..001f0e07 100644
--- a/ng-app/src/apps/ProseMirrorEditor.svelte
+++ b/ng-app/src/apps/ProseMirrorEditor.svelte
@@ -37,7 +37,7 @@
     export let commits = {};
 
     const ydoc = new Y.Doc()
-    const yxml = ydoc.getXmlFragment('ng')
+    const yxml = ydoc.getXmlFragment('prosemirror')
 
     let view;
 
diff --git a/ng-app/src/apps/ProseMirrorViewer.svelte b/ng-app/src/apps/ProseMirrorViewer.svelte
index 1ade29c2..8ce8bbfa 100644
--- a/ng-app/src/apps/ProseMirrorViewer.svelte
+++ b/ng-app/src/apps/ProseMirrorViewer.svelte
@@ -31,7 +31,7 @@
     let source = "";
 
     const ydoc = new Y.Doc()
-    const yxml = ydoc.getXmlFragment('ng')
+    const yxml = ydoc.getXmlFragment('prosemirror')
 
     let loading = true;
 
@@ -101,7 +101,7 @@
 
     {#if source}
       
-        <div class="post-rich-text prose">
+        <div class="post-rich-text prose" style="margin-top: 1.25em;">
             {@html source}
         </div>
 
diff --git a/ng-app/src/apps/XmlSource.svelte b/ng-app/src/apps/XmlSource.svelte
new file mode 100644
index 00000000..7891aac2
--- /dev/null
+++ b/ng-app/src/apps/XmlSource.svelte
@@ -0,0 +1,131 @@
+<!--
+// Copyright (c) 2022-2024 Niko Bonnieure, Par le Peuple, NextGraph.org developers
+// All rights reserved.
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE2 or http://www.apache.org/licenses/LICENSE-2.0>
+// or the MIT license <LICENSE-MIT or http://opensource.org/licenses/MIT>,
+// at your option. All files in the project carrying such
+// notice may not be copied, modified, or distributed except
+// according to those terms.
+-->
+
+<!--
+    We could maybe also use https://ssssota.github.io/svelte-exmarkdown/ for rendering the MD (but to obtain the MD, we need to instantiate Milkdown anyway)
+-->
+
+<script lang="ts">
+    import { onMount, tick, onDestroy } from "svelte";
+    import { 
+      toast_error,
+      toast_success,
+      reset_toasts,
+      display_error,
+      live_discrete_update,
+      discrete_update
+    } from "../store";
+    import { 
+        cur_tab_register_on_save,
+        cur_tab_deregister_on_save,
+        cur_tab_branch_class,
+        set_view_or_edit
+    } from "../tab";
+    import { t } from "svelte-i18n";
+    import{ PencilSquare } from "svelte-heros-v2";
+    
+    import * as Y from 'yjs'
+    
+    import xml from "svelte-highlight/languages/xml";
+    import Highlight, { LineNumbers } from "svelte-highlight";
+    import "svelte-highlight/styles/github.css";
+    import beautify from "xml-beautifier";
+
+    export let commits = {};
+
+    const ydoc = new Y.Doc();
+    const yxml = ydoc.getXmlFragment('prosemirror');
+
+    let has_content = true;
+    let loading = true;
+
+    let source = "";
+
+    function process_doc() {
+        source = beautify("<?xml version=\"1.0\" encoding=\"utf-8\"?>"+yxml.toString());
+        //console.log(source);
+    }
+
+    async function setup() {
+        try {
+        
+            ydoc.on('destroy', async () => {
+                
+            })
+
+            has_content = false;
+            let history = commits.discrete?.registerOnUpdate((update) => {
+                Y.applyUpdate(ydoc, update.YXml, {local:true})
+                has_content = true;
+                process_doc();
+            });
+            for (const h of history) {
+                Y.applyUpdate(ydoc, h.YXml, {local:true})
+                has_content = true;
+            }
+            if (has_content) process_doc();
+            loading = false;
+
+        }
+        catch (e){
+            console.log(e)
+        }
+    }
+
+    onMount(async ()=>{
+        await setup();
+
+    });
+
+    onDestroy(async ()=>{
+        ydoc.destroy();
+        commits.discrete?.deregisterOnUpdate();
+    });
+
+ 
+  </script>
+
+    {#if !has_content}
+        <p class="ml-5">{$t("doc.empty")}</p>
+    {/if}
+
+  {#if loading}
+    <div class="grow flex flex-col justify-center text-primary-700">
+        <svg
+            class="animate-spin mt-4 h-10 w-10 mb-4 mx-auto"
+            xmlns="http://www.w3.org/2000/svg"
+            fill="none"
+            stroke="currentColor"
+            viewBox="0 0 24 24"
+        >
+            <circle
+            class="opacity-25"
+            cx="12"
+            cy="12"
+            r="10"
+            stroke="currentColor"
+            stroke-width="4"
+            />
+            <path
+            class="opacity-75"
+            fill="currentColor"
+            d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
+            />
+        </svg>
+        <p class="text-center">{$t("connectivity.loading")}...</p>
+    </div>
+  {/if}
+
+    {#if source} 
+        <Highlight language={xml} code={source} class="mb-10" let:highlighted>
+            <LineNumbers {highlighted} wrapLines hideBorder />
+        </Highlight>
+    {/if}
diff --git a/ng-app/src/apps/YMapEditor.svelte b/ng-app/src/apps/YMapEditor.svelte
index cd66124f..fd097faf 100644
--- a/ng-app/src/apps/YMapEditor.svelte
+++ b/ng-app/src/apps/YMapEditor.svelte
@@ -266,7 +266,7 @@
 
     function onRenderContextMenu(items, context) {
         if (items[4].items[1].items[0].text == "Convert to:") items[4].items.pop();
-        if (Array.isArray(context.selection.path) && context.selection.path.length == 0 && context.selection.type === "value") {
+        if (Array.isArray(context.selection?.path) && context.selection.path.length == 0 && context.selection.type === "value") {
             items[2].items.shift();
             items[2].items.pop();
             items[4].items[0].items.pop();
@@ -275,6 +275,7 @@
     }
   
   </script>
+
   <div class="grow ng-json-editor" style="min-height:300px;">
     <JSONEditor bind:this={editor} {content} onChange={handleChange} {onRenderMenu} {onRenderContextMenu}/>
     
diff --git a/ng-app/src/apps/YMapViewer.svelte b/ng-app/src/apps/YMapViewer.svelte
index 7e5ba492..a8e1deaa 100644
--- a/ng-app/src/apps/YMapViewer.svelte
+++ b/ng-app/src/apps/YMapViewer.svelte
@@ -20,11 +20,11 @@
       discrete_update
     } from "../store";
     import { 
-        cur_tab_register_on_save,
-        cur_tab_deregister_on_save,
-        cur_tab_branch_class
+        cur_tab_doc_can_edit,
+        set_view_or_edit
     } from "../tab";
     import { t } from "svelte-i18n";
+    import{ PencilSquare } from "svelte-heros-v2";
     
     import * as Y from 'yjs'
     import { JSONEditor } from 'svelte-jsoneditor'
@@ -119,12 +119,17 @@
         for (const h of history) {
             Y.applyUpdate(ydoc, h[crdt], {local:true})
         }
+        loading = false;
     });
 
     onDestroy(async ()=>{
         ydoc.destroy();
         await editor.destroy();
     });
+
+    const edit = () => {
+      set_view_or_edit(false);
+    }
   
   </script>
 
@@ -155,6 +160,20 @@
         </div>
     {/if}
 
+
+  {#if $cur_tab_doc_can_edit && ( crdt=="YMap" && Object.keys(content.json).length == 0 || crdt=="YArray" && Array.isArray(content.json) && content.json.length == 0 ) }
+    <div class="flex-row">
+        <button
+            on:click={edit}
+            on:keypress={edit}
+            class="shrink select-none ml-4 mt-2 mb-4 text-white bg-primary-700 hover:bg-primary-700/90 focus:ring-4 focus:ring-primary-500/50 rounded-lg text-base p-2 text-center inline-flex items-center dark:focus:ring-primary-700/55"
+        >
+            <PencilSquare class="mr-2 focus:outline-none" tabindex="-1" />
+            {$t("doc.start_editing")}
+        </button>
+    </div>
+  {/if}
+
   <div class="grow ng-json-editor" style="min-height:300px;">
     <JSONEditor bind:this={editor} {content} readOnly={true} />
     
diff --git a/ng-app/src/classes.ts b/ng-app/src/classes.ts
index c05d0d88..64993645 100644
--- a/ng-app/src/classes.ts
+++ b/ng-app/src/classes.ts
@@ -105,6 +105,7 @@ export const official_classes = {
         "ng:o": "n:g:z:pre",
         "ng:w": "n:g:z:code_editor",
         "ng:compat": ["file:iana:text:javascript"],
+        "implemented": true
     },
     "code:ts": {
         "ng:crdt": "YText",
@@ -113,6 +114,7 @@ export const official_classes = {
         "ng:o": "n:g:z:pre",
         "ng:w": "n:g:z:code_editor",
         "ng:compat": ["file:iana:text:typescript"],
+        "implemented": true
     },
     "code:rust": {
         "ng:crdt": "YText",
@@ -121,6 +123,7 @@ export const official_classes = {
         "ng:o": "n:g:z:pre",
         "ng:w": "n:g:z:code_editor",
         "ng:compat": [],
+        "implemented": true
     },
     "code:svelte": {
         "ng:crdt": "YText",
@@ -129,6 +132,7 @@ export const official_classes = {
         "ng:o": "n:g:z:pre",
         "ng:w": "n:g:z:code_editor",
         "ng:compat": [],
+        "implemented": true
     },
     "code:react": {
         "ng:crdt": "YText",
@@ -137,6 +141,7 @@ export const official_classes = {
         "ng:o": "n:g:z:pre",
         "ng:w": "n:g:z:code_editor",
         "ng:compat": [],
+        "implemented": true
     },
     "app": {
         "ng:n": "Official App",
@@ -283,6 +288,7 @@ export const official_classes = {
         },
         "ng:compat": [ "rdf:*", "xsd:*", "file:iana:text:n3", "file:iana:text:rdf+n3", "file:iana:text:turtle", "file:iana:application:n-quads", "file:iana:application:trig", "file:iana:application:n-triples", 
                         "file:iana:application:rdf+xml", "file:iana:application:ld+json"],
+        "implemented": true
     },
     "data:json": {
         "ng:crdt": "Automerge",
@@ -291,6 +297,7 @@ export const official_classes = {
         "ng:o": "n:g:z:json_automerge_viewer", // default viewer
         "ng:w": "n:g:z:json_automerge_editor", // default editor
         "ng:compat": ["file:iana:application:json", "code:json"],
+        "implemented": true
     },
     "data:array": {
         "ng:crdt": "YArray",
@@ -299,6 +306,7 @@ export const official_classes = {
         "ng:o": "n:g:z:json_yarray_viewer", // default viewer
         "ng:w": "n:g:z:json_yarray_editor", // default editor
         "ng:compat": ["file:iana:application:json", "code:json"],
+        "implemented": true
     },
     "data:map": {
         "ng:crdt": "YMap",
@@ -307,6 +315,7 @@ export const official_classes = {
         "ng:o": "n:g:z:json_ymap_viewer", // default viewer
         "ng:w": "n:g:z:json_ymap_editor", // default editor
         "ng:compat": ["file:iana:application:json", "code:json"],
+        "implemented": true
     },
     "data:xml": {
         "ng:crdt": "YXml",
@@ -343,6 +352,7 @@ export const official_classes = {
             "ldp": true,
         },
         "ng:compat": ["rdfs:member","ldp:contains","rdf:Bag","rdf:Alt"],
+        "implemented": true
     },
     "data:plato": {
         "ng:crdt": "Graph",
diff --git a/ng-app/src/lib/Document.svelte b/ng-app/src/lib/Document.svelte
index 902142f4..0e54ddb6 100644
--- a/ng-app/src/lib/Document.svelte
+++ b/ng-app/src/lib/Document.svelte
@@ -118,7 +118,34 @@
                   </div>
                 {:then}
                     {#if $cur_app}
-                        {#await load_official_app($cur_app) then app}
+                        {#await load_official_app($cur_app)}
+                          <div class="flex flex-col justify-center text-primary-700">
+                            <div class:max-w-screen-lg={center} class="p-4" class:w-[1024px]={center}> 
+                              <svg
+                                class="animate-spin mt-4 h-10 w-10 mb-4 mx-auto"
+                                xmlns="http://www.w3.org/2000/svg"
+                                fill="none"
+                                stroke="currentColor"
+                                viewBox="0 0 24 24"
+                              >
+                                <circle
+                                  class="opacity-25"
+                                  cx="12"
+                                  cy="12"
+                                  r="10"
+                                  stroke="currentColor"
+                                  stroke-width="4"
+                                />
+                                <path
+                                  class="opacity-75"
+                                  fill="currentColor"
+                                  d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
+                                />
+                              </svg>
+                              <p class="text-center">{$t("connectivity.loading")}...</p>
+                            </div>
+                          </div>
+                        {:then app}
                         <div class:max-w-screen-lg={center} class="flex flex-col" style="overflow-wrap: anywhere;" class:w-[1024px]={center} > 
                             <svelte:component this={app} commits={$commits}/>
                         </div>
diff --git a/ng-app/src/lib/FullLayout.svelte b/ng-app/src/lib/FullLayout.svelte
index 08b27e19..ab137b29 100644
--- a/ng-app/src/lib/FullLayout.svelte
+++ b/ng-app/src/lib/FullLayout.svelte
@@ -103,6 +103,8 @@
     Camera,
     VideoCamera,
     Microphone,
+    ChevronUp,
+    ChevronDown,
   } from "svelte-heros-v2";
     import NavBar from "./components/NavBar.svelte";
 
@@ -340,8 +342,8 @@
     "data:board",
     "data:grid",
     "data:json",
-    "data:array",
     "data:map",
+    "data:array",
     "data:xml",
   ];
 
@@ -643,7 +645,7 @@
             </li>
             {/if}
             {#if $cur_viewer}
-              <MenuItem selected={$cur_tab_view_or_edit} title={$cur_viewer["ng:a"]} clickable={($available_viewers.length > 1 || !$cur_tab_view_or_edit) && function () { if ($available_viewers.length > 1) { open_view_as = !open_view_as; } else { set_view_or_edit(true); hideMenu(); } open_edit_with=false;} }>
+              <MenuItem selected={$cur_tab_view_or_edit} title={$cur_viewer["ng:a"]} dropdown={$available_viewers.length > 1 ? open_view_as : undefined} clickable={($available_viewers.length > 1 || !$cur_tab_view_or_edit) && function () { if ($available_viewers.length > 1) { open_view_as = !open_view_as; } else { set_view_or_edit(true); hideMenu(); } open_edit_with=false;} }>
                 <Eye
                   tabindex="-1"
                   class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white  "
@@ -652,7 +654,7 @@
               </MenuItem>
               {#if open_view_as && $available_viewers.length > 1 }
                 {#each $available_viewers as viewer}
-                  <MenuItem title={viewer["ng:a"]} extraClass="submenu" clickable={(viewer["ng:g"] !== $cur_viewer["ng:g"] || !$cur_tab_view_or_edit) && function () { set_view_or_edit(true); set_viewer(viewer["ng:g"]); hideMenu(); open_view_as = false} }>
+                  <MenuItem title={viewer["ng:a"]} extraClass="submenu" clickable={viewer["implemented"] ? (viewer["ng:g"] !== $cur_viewer["ng:g"] || !$cur_tab_view_or_edit) && function () { set_view_or_edit(true); set_viewer(viewer["ng:g"]); hideMenu(); open_view_as = false} : undefined }>
                     <ZeraIcon
                       zera={viewer["ng:u"]}
                       config={{
@@ -667,7 +669,9 @@
             {/if}
             {#if $cur_tab_doc_can_edit}
               {#if $cur_editor}
-                <MenuItem title={$cur_editor["ng:a"]} selected={!$cur_tab_view_or_edit} clickable={ ($available_editors.length > 1 || $cur_tab_view_or_edit) && function () { if ($available_editors.length > 1) { open_edit_with = !open_edit_with;  } else { set_view_or_edit(false); hideMenu(); } open_view_as=false;} }>
+                <MenuItem title={$cur_editor["ng:a"]} selected={!$cur_tab_view_or_edit} 
+                          dropdown={$available_editors.length > 1 ? open_edit_with : undefined} 
+                          clickable={ ($available_editors.length > 1 || $cur_tab_view_or_edit) && function () { if ($available_editors.length > 1) { open_edit_with = !open_edit_with;  } else { set_view_or_edit(false); hideMenu(); } open_view_as=false;} }>
                   <PencilSquare
                     tabindex="-1"
                     class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white  "
@@ -676,7 +680,8 @@
                 </MenuItem>
                 {#if open_edit_with && $available_editors.length > 1 }
                   {#each $available_editors as editor}
-                    <MenuItem title={editor["ng:a"]} extraClass="submenu" clickable={(editor["ng:g"] !== $cur_editor["ng:g"] || $cur_tab_view_or_edit) && function () { set_view_or_edit(false); set_editor(editor["ng:g"]); hideMenu(); open_edit_with = false} }>
+                    <MenuItem title={editor["ng:a"]} extraClass="submenu" 
+                      clickable={editor["implemented"] ? (editor["ng:g"] !== $cur_editor["ng:g"] || $cur_tab_view_or_edit) && function () { set_view_or_edit(false); set_editor(editor["ng:g"]); hideMenu(); open_edit_with = false} : undefined }>
                       <ZeraIcon
                         zera={editor["ng:u"]}
                         config={{
@@ -752,7 +757,7 @@
                 <span class="ml-3">{$t("doc.menu.items.files.label")} {$all_files_count}</span>
               </MenuItem>
               <div style="padding:0;" bind:this={shareMenu}></div>
-              <MenuItem title={$t("doc.menu.items.share.desc")} clickable={ () => { open_share = !open_share; scrollToMenuShare(); } }>
+              <MenuItem title={$t("doc.menu.items.share.desc")} dropdown={open_share} clickable={ () => { open_share = !open_share; scrollToMenuShare(); } }>
                 <Share
                   tabindex="-1"
                   class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"
@@ -838,7 +843,7 @@
                 <span class="ml-3">{$t("doc.menu.items.settings.label")}</span>
               </MenuItem>
               <div style="padding:0;" bind:this={toolsMenu}></div>
-              <MenuItem title={$t("doc.menu.items.tools.desc")} clickable={ () => {open_tools = !open_tools; scrollToMenuTools();} } >
+              <MenuItem title={$t("doc.menu.items.tools.desc")} dropdown={open_tools} clickable={ () => {open_tools = !open_tools; scrollToMenuTools();} } >
                 <WrenchScrewdriver
                   tabindex="-1"
                   class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"
@@ -858,7 +863,7 @@
               <Icon tabindex="-1" class="w-7 h-7 text-gray-700 focus:outline-none dark:text-white" variation="outline" color="currentColor" icon={pane_items["mc"]} />
               <span class="ml-3">{$t("doc.menu.items.mc.label")}</span>
             </MenuItem>
-            <MenuItem title={$t("doc.menu.items.archive.desc")} selected={$cur_tab_right_pane == "mc"} clickable={ ()=> openArchive() }>
+            <MenuItem title={$t("doc.menu.items.archive.desc")} clickable={ ()=> openArchive() }>
               <ArchiveBox
                   tabindex="-1"
                   class="w-7 h-7 text-gray-700  focus:outline-none dark:text-white"
@@ -934,17 +939,19 @@
             <TxtIcon class="w-7 h-7 text-gray-700 focus:outline-none dark:text-white" />
             <span class="ml-3">{$t("doc.text")}</span>
           </MenuItem>
-          <MenuItem title={$t("doc.group")} clickable={ ()=> new_group() }>
+          <!--new_group-->
+          <MenuItem title={$t("doc.group")} clickable={ undefined }>
             <UserGroup tabindex="-1"
             class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"/>
             <span class="ml-3">{$t("doc.group")}</span>
           </MenuItem>
-          <MenuItem title={get_class("doc:compose")["ng:a"]} clickable={ ()=> new_document("doc:compose") }>
+          <!-- ()=> new_document("doc:compose") -->
+          <MenuItem title={get_class("doc:compose")["ng:a"]} clickable={ undefined  }>
             <DataClassIcon dataClass="doc:compose" {config}/>
             <span class="ml-3">{get_class("doc:compose")["ng:n"]}</span>
           </MenuItem>
           <div style="padding:0;" bind:this={createMenu.social}></div>
-          <MenuItem title={$t("doc.social")} clickable={ () => { createMenuOpened.social = !createMenuOpened.social; scrollToCreateMenu("social"); } }>
+          <MenuItem title={$t("doc.social")} dropdown={createMenuOpened.social} clickable={ () => { createMenuOpened.social = !createMenuOpened.social; scrollToCreateMenu("social"); } }>
             <Users
               tabindex="-1"
               class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"
@@ -953,7 +960,8 @@
           </MenuItem>
           {#if createMenuOpened.social }
             {#each create_social_items as item}
-              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ () => new_document(item) }>
+              <!-- () => new_document(item) -->
+              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ undefined }>
                 <DataClassIcon dataClass={item} {config}/>
                 <span class="ml-3">{get_class(item)["ng:n"]}</span>
               </MenuItem>
@@ -961,18 +969,20 @@
           {/if}
 
           <div style="padding:0;" bind:this={createMenu.apps}></div>
-          <MenuItem title={$t("doc.apps")} clickable={ () => { createMenuOpened.apps = !createMenuOpened.apps; scrollToCreateMenu("apps"); } }>
+          <MenuItem title={$t("doc.apps")} dropdown={createMenuOpened.apps} clickable={ () => { createMenuOpened.apps = !createMenuOpened.apps; scrollToCreateMenu("apps"); } }>
             <DataClassIcon dataClass="app:z" {config}/>
             <span class="ml-3">{$t("doc.apps")}</span>
           </MenuItem>
           {#if createMenuOpened.apps }
-            <MenuItem title={$t("doc.new_app")} extraClass="submenu" clickable={ () => new_app() }>
+            <!-- () => new_app() -->
+            <MenuItem title={$t("doc.new_app")} extraClass="submenu" clickable={ undefined }>
               <Beaker tabindex="-1"
                 class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"/>
               <span class="ml-3">{$t("doc.new_app")}</span>
             </MenuItem>
             {#each create_apps_items as item}
-              <MenuItem title="" extraClass="submenu" clickable={ () => new_document(item) }>
+            <!-- () => new_document(item) -->
+              <MenuItem title="" extraClass="submenu" clickable={ undefined }>
                 <DataClassIcon dataClass={item} {config}/>
                 <span class="ml-3">3rd party app Class</span>
               </MenuItem>
@@ -980,7 +990,7 @@
           {/if}
 
           <div style="padding:0;" bind:this={createMenu.pro}></div>
-          <MenuItem title={$t("doc.pro")} clickable={ () => { createMenuOpened.pro = !createMenuOpened.pro; scrollToCreateMenu("pro"); } }>
+          <MenuItem title={$t("doc.pro")} dropdown={createMenuOpened.pro} clickable={ () => { createMenuOpened.pro = !createMenuOpened.pro; scrollToCreateMenu("pro"); } }>
             <Briefcase
               tabindex="-1"
               class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"
@@ -989,7 +999,8 @@
           </MenuItem>
           {#if createMenuOpened.pro }
             {#each create_pro_items as item}
-              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ () => new_document(item) }>
+              <!-- () => new_document(item) -->
+              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ undefined }>
                 <DataClassIcon dataClass={item} {config}/>
                 <span class="ml-3">{get_class(item)["ng:n"]}</span>
               </MenuItem>
@@ -998,25 +1009,26 @@
           
           {#await check_has_camera() then has_camera}
             {#if has_camera}
-              <MenuItem title={$t("buttons.scan_qr")} clickable={ ()=> scan_qr() }>
+              <!-- ()=> scan_qr() -->
+              <MenuItem title={$t("buttons.scan_qr")} clickable={ undefined }>
                 <QrCode tabindex="-1"
                 class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"/>
                 <span class="ml-3">{$t("buttons.scan_qr")}</span>
               </MenuItem>
-
-              <MenuItem title={$t("doc.take_picture")} clickable={ ()=> take_picture() }>
+              <!-- ()=> take_picture() -->
+              <MenuItem title={$t("doc.take_picture")} clickable={ undefined }>
                 <Camera tabindex="-1"
                 class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"/>
                 <span class="ml-3">{$t("doc.take_picture")}</span>
               </MenuItem>
-
-              <MenuItem title={$t("doc.record_reel")} clickable={ ()=> record_reel() }>
+              <!-- ()=> record_reel() -->
+              <MenuItem title={$t("doc.record_reel")} clickable={ undefined }>
                 <VideoCamera tabindex="-1"
                 class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"/>
                 <span class="ml-3">{$t("doc.record_reel")}</span>
               </MenuItem>
-
-              <MenuItem title={$t("doc.record_voice")} clickable={ ()=> record_voice() }>
+              <!-- ()=> record_voice() -->
+              <MenuItem title={$t("doc.record_voice")} clickable={ undefined }>
                 <Microphone tabindex="-1"
                 class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"/>
                 <span class="ml-3">{$t("doc.record_voice")}</span>
@@ -1024,7 +1036,7 @@
             {/if}
 
             <div style="padding:0;" bind:this={createMenu.media}></div>
-            <MenuItem title={$t("doc.media")} clickable={ () => { createMenuOpened.media = !createMenuOpened.media; scrollToCreateMenu("media"); } }>
+            <MenuItem title={$t("doc.media")} dropdown={createMenuOpened.media} clickable={ () => { createMenuOpened.media = !createMenuOpened.media; scrollToCreateMenu("media"); } }>
               <DocumentArrowUp
                 tabindex="-1"
                 class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"
@@ -1033,13 +1045,15 @@
             </MenuItem>
             {#if createMenuOpened.media }
               {#each create_media_items as item}
-                <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ () => new_document(item) }>
+                <!-- () => new_document(item) -->
+                <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ undefined }>
                   <DataClassIcon dataClass={item} {config}/>
                   <span class="ml-3">{get_class(item)["ng:n"]}</span>
                 </MenuItem>
               {/each}
               {#if !has_camera}
-                <MenuItem title={$t("doc.record_voice")} extraClass="submenu"  clickable={ ()=> record_voice() }>
+                <!-- ()=> record_voice() -->
+                <MenuItem title={$t("doc.record_voice")} extraClass="submenu"  clickable={ undefined }>
                   <Microphone tabindex="-1"
                   class="w-7 h-7 text-gray-700  focus:outline-none  dark:text-white"/>
                   <span class="ml-3">{$t("doc.record_voice")}</span>
@@ -1049,13 +1063,14 @@
           {/await}
 
           <div style="padding:0;" bind:this={createMenu.chart}></div>
-          <MenuItem title={$t("doc.chart")} clickable={ () => { createMenuOpened.chart = !createMenuOpened.chart; scrollToCreateMenu("chart"); } }>
+          <MenuItem title={$t("doc.chart")} dropdown={createMenuOpened.chart} clickable={ () => { createMenuOpened.chart = !createMenuOpened.chart; scrollToCreateMenu("chart"); } }>
             <DataClassIcon dataClass="doc:chart" {config}/>
             <span class="ml-3">{$t("doc.chart")}</span>
           </MenuItem>
           {#if createMenuOpened.chart }
             {#each create_chart_items as item}
-              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ () => new_document(item) }>
+              <!-- () => new_document(item) -->
+              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ undefined }>
                 <DataClassIcon dataClass={item} {config}/>
                 <span class="ml-3">{get_class(item)["ng:n"]}</span>
               </MenuItem>
@@ -1063,13 +1078,14 @@
           {/if}
 
           <div style="padding:0;" bind:this={createMenu.viz}></div>
-          <MenuItem title={$t("doc.viz")} clickable={ () => { createMenuOpened.viz = !createMenuOpened.viz; scrollToCreateMenu("viz"); } }>
+          <MenuItem title={$t("doc.viz")} dropdown={createMenuOpened.viz} clickable={ () => { createMenuOpened.viz = !createMenuOpened.viz; scrollToCreateMenu("viz"); } }>
             <DataClassIcon dataClass="doc:viz" {config}/>
             <span class="ml-3">{$t("doc.viz")}</span>
           </MenuItem>
           {#if createMenuOpened.viz }
             {#each create_viz_items as item}
-              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ () => new_document(item) }>
+              <!-- () => new_document(item) -->
+              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ undefined }>
                 <DataClassIcon dataClass={item} {config}/>
                 <span class="ml-3">{get_class(item)["ng:n"]}</span>
               </MenuItem>
@@ -1077,13 +1093,14 @@
           {/if}
 
           <div style="padding:0;" bind:this={createMenu.diagram}></div>
-          <MenuItem title={$t("doc.diagram")} clickable={ () => { createMenuOpened.diagram = !createMenuOpened.diagram; scrollToCreateMenu("diagram"); } }>
+          <MenuItem title={$t("doc.diagram")} dropdown={createMenuOpened.diagram} clickable={ () => { createMenuOpened.diagram = !createMenuOpened.diagram; scrollToCreateMenu("diagram"); } }>
             <DataClassIcon dataClass="doc:diagram" {config}/>
             <span class="ml-3">{$t("doc.diagram")}</span>
           </MenuItem>
           {#if createMenuOpened.diagram }
             {#each create_diagram_items as item}
-              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ () => new_document(item) }>
+              <!-- () => new_document(item) -->
+              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ undefined }>
                 <DataClassIcon dataClass={item} {config}/>
                 <span class="ml-3">{get_class(item)["ng:n"]}</span>
               </MenuItem>
@@ -1091,13 +1108,14 @@
           {/if}
 
           <div style="padding:0;" bind:this={createMenu.doc}></div>
-          <MenuItem title={$t("doc.other")} clickable={ () => { createMenuOpened.doc = !createMenuOpened.doc; scrollToCreateMenu("doc"); } }>
+          <MenuItem title={$t("doc.other")} dropdown={createMenuOpened.doc} clickable={ () => { createMenuOpened.doc = !createMenuOpened.doc; scrollToCreateMenu("doc"); } }>
             <DataClassIcon dataClass="doc:" {config}/>
             <span class="ml-3">{$t("doc.other")}</span>
           </MenuItem>
           {#if createMenuOpened.doc }
             {#each create_doc_items as item}
-              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ () => new_document(item) }>
+              <!-- () => new_document(item) -->
+              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ undefined }>
                 <DataClassIcon dataClass={item} {config}/>
                 <span class="ml-3">{get_class(item)["ng:n"]}</span>
               </MenuItem>
@@ -1105,13 +1123,13 @@
           {/if}
 
           <div style="padding:0;" bind:this={createMenu.data}></div>
-          <MenuItem title={$t("doc.data")} clickable={ () => { createMenuOpened.data = !createMenuOpened.data; scrollToCreateMenu("data"); } }>
+          <MenuItem title={$t("doc.data")} dropdown={createMenuOpened.data} clickable={ () => { createMenuOpened.data = !createMenuOpened.data; scrollToCreateMenu("data"); } }>
             <DataClassIcon dataClass="data:" {config}/>
             <span class="ml-3">{$t("doc.data")}</span>
           </MenuItem>
           {#if createMenuOpened.data }
             {#each create_data_items as item}
-              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ () => new_document(item) }>
+              <MenuItem title={get_class(item)["ng:a"]} extraClass="submenu" clickable={ get_class(item)["implemented"] ? () => new_document(item) : undefined }>
                 <DataClassIcon dataClass={item} {config}/>
                 <span class="ml-3">{get_class(item)["ng:n"]}</span>
               </MenuItem>
@@ -1119,7 +1137,7 @@
           {/if}
 
           <div style="padding:0;" bind:this={createMenu.code}></div>
-          <MenuItem title={$t("doc.code")} clickable={ () => { createMenuOpened.code = !createMenuOpened.code; scrollToCreateMenu("code"); } }>
+          <MenuItem title={$t("doc.code")} dropdown={createMenuOpened.code} clickable={ () => { createMenuOpened.code = !createMenuOpened.code; scrollToCreateMenu("code"); } }>
             <DataClassIcon dataClass="code" {config}/>
             <span class="ml-3">{$t("doc.code")}</span>
           </MenuItem>
@@ -1132,7 +1150,8 @@
             {/each}
           {/if}
 
-          <MenuItem title={get_class("e:link")["ng:a"]} clickable={ ()=> new_document("e:link") }>
+          <!-- ()=> new_document("e:link") -->
+          <MenuItem title={get_class("e:link")["ng:a"]} clickable={ undefined }>
             <DataClassIcon dataClass="e:link" {config}/>
             <span class="ml-3">{get_class("e:link")["ng:n"]}</span>
           </MenuItem>
diff --git a/ng-app/src/lib/Pane.svelte b/ng-app/src/lib/Pane.svelte
index f09344d6..9e4d99fe 100644
--- a/ng-app/src/lib/Pane.svelte
+++ b/ng-app/src/lib/Pane.svelte
@@ -19,6 +19,7 @@
   };
 
   const load_pane = async (pane_name) => {
+    if (!panes[pane_name]) return false;
     let component = await import(`./panes/${panes[pane_name]}.svelte`);
     return component.default;
   };
@@ -29,9 +30,11 @@
 
   {#if pane_name}
       {#await load_pane(pane_name) then pane}
-      <div class="flex w-full" style="overflow-wrap: anywhere;"> 
-          <svelte:component this={pane}/>
-      </div>
+        {#if pane}
+          <div class="flex w-full" style="overflow-wrap: anywhere;"> 
+              <svelte:component this={pane}/>
+          </div>
+        {/if}
       {/await}
   {/if}
 
diff --git a/ng-app/src/lib/components/MenuItem.svelte b/ng-app/src/lib/components/MenuItem.svelte
index f5bcce1e..97bd8c38 100644
--- a/ng-app/src/lib/components/MenuItem.svelte
+++ b/ng-app/src/lib/components/MenuItem.svelte
@@ -16,17 +16,36 @@
     export let extraClass = "";
     export let selected = false;
     export let title = "";
+    export let dropdown = undefined;
+
+    import {
+        ChevronUp,
+        ChevronDown,
+    } from "svelte-heros-v2";
 
 </script>
 
 {#if clickable}
     <li {title} role="menuitem" tabindex="0" class:text-primary-600={selected} class:text-gray-800={!selected} class:dark:text-white={!selected} class:dark:text-primary-300={selected} 
-        class="{extraClass} select-none clickable focus:outline-2 focus:outline flex items-center px-2 py-1 text-base font-normal rounded-lg  hover:bg-gray-200 dark:hover:bg-gray-700 mt-1"
+        class="{extraClass} select-none clickable focus:outline-2 focus:outline flex items-center pl-2 py-1 text-base font-normal rounded-lg  hover:bg-gray-200 dark:hover:bg-gray-700 mt-1 pr-0"
         on:click={(e) => { e.currentTarget.blur(); clickable();}} on:keypress={clickable} on:keydown={(e) => {if (e.code=='Space') { e.preventDefault(); clickable();} }}>
         <slot />
+        {#if dropdown!==undefined}
+        <div class="grow"></div>
+            {#if dropdown}
+                <ChevronUp/>
+            {:else}
+                <ChevronDown/>
+            {/if}
+        {/if}
+    </li>
+{:else if clickable === false}
+    <li {title} class="{extraClass} select-none flex items-center px-2 py-1 text-base font-normal  text-primary-600 rounded-lg dark:text-primary-300  mt-1">
+        <slot />
     </li>
 {:else}
-    <li class="{extraClass} select-none flex items-center px-2 py-1 text-base font-normal  text-primary-600 rounded-lg dark:text-primary-300  mt-1">
+    <li {title} class="{extraClass} select-none flex items-center px-2 py-1 text-base font-normal deactivated-menu text-gray-400 rounded-lg dark:text-gray-400  mt-1" >
         <slot />
     </li>
-{/if}
\ No newline at end of file
+{/if}
+
diff --git a/ng-app/src/styles.css b/ng-app/src/styles.css
index e16aa776..6501ad7e 100644
--- a/ng-app/src/styles.css
+++ b/ng-app/src/styles.css
@@ -238,6 +238,10 @@ div[role="alert"] div {
     justify-content: center;
 }
 
+.deactivated-menu > svg {
+    color: rgb(156 163 175) !important;
+}
+
 :root {
     font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
     font-size: 16px;
diff --git a/ng-app/src/tab.ts b/ng-app/src/tab.ts
index dd4618b5..0e5d4034 100644
--- a/ng-app/src/tab.ts
+++ b/ng-app/src/tab.ts
@@ -535,6 +535,7 @@ export const change_nav_bar = (icon, title, back) => {
         }
         return old;
     });
+    live_editing.set(get(cur_tab).doc.live_edit);
 };
 
 export const persistent_error = (nuri, pe) => {
diff --git a/ng-app/src/zeras.ts b/ng-app/src/zeras.ts
index 8120eaf9..6385e6db 100644
--- a/ng-app/src/zeras.ts
+++ b/ng-app/src/zeras.ts
@@ -30,6 +30,7 @@ export const official_apps = {
         "ng:b": "SparqlUpdateEditor", // YASGUI of Zazuko https://github.com/zazuko/trifid/tree/main/packages/yasgui
         "ng:o": [],
         "ng:w": ["query:sparql_update","data:graph"],
+        implemented: true,
     },
     "n:g:z:json_ld_editor": {
         "ng:n": "JSON-LD Editor",
@@ -48,6 +49,7 @@ export const official_apps = {
         "ng:g": "n:g:z:json_yarray_editor",
         "ng:b": "YArrayEditor",
         "ng:w": ["data:array"],
+        implemented: true,
     },
     "n:g:z:json_automerge_editor": {
         "ng:n": "JSON Editor",
@@ -58,6 +60,7 @@ export const official_apps = {
         "ng:b": "AutomergeEditor",
         "ng:w": ["data:json"],
         "full_width": true,
+        implemented: true,
     },
     "n:g:z:json_ymap_editor": {
         "ng:n": "JSON Editor",
@@ -67,6 +70,7 @@ export const official_apps = {
         "ng:g": "n:g:z:json_ymap_editor",
         "ng:b": "YMapEditor",
         "ng:w": ["data:map"],
+        implemented: true,
     },
     "n:g:z:triple_editor": {
         "ng:n": "Graph Triples Editor",
@@ -86,6 +90,7 @@ export const official_apps = {
         "ng:b": "TurtleViewer",
         "ng:o": ["data:graph"],
         "ng:w": [],
+        implemented: true,
     },
     "n:g:z:sparql_query": {
         "ng:n": "SPARQL Query",
@@ -96,6 +101,7 @@ export const official_apps = {
         "ng:b": "SparqlQueryEditor", // YASGUI of Zazuko https://github.com/zazuko/trifid/tree/main/packages/yasgui
         "ng:o": ["data:graph"],
         "ng:w": ["query:sparql"],
+        implemented: true,
     },
     "n:g:z:json_ld_viewer": {
         "ng:n": "JSON-LD",
@@ -124,6 +130,7 @@ export const official_apps = {
         "ng:g": "n:g:z:json_ymap_viewer",
         "ng:b": "YMapViewer",
         "ng:o": ["data:map"],
+        implemented: true,
     },
     "n:g:z:json_yarray_viewer": {
         "ng:n": "JSON",
@@ -133,6 +140,7 @@ export const official_apps = {
         "ng:g": "n:g:z:json_yarray_viewer",
         "ng:b": "YArrayViewer",
         "ng:o": ["data:array"],
+        implemented: true,
     },
     "n:g:z:json_automerge_viewer": {
         "ng:n": "JSON",
@@ -143,6 +151,7 @@ export const official_apps = {
         "ng:b": "AutomergeViewer",
         "ng:o": ["data:json"],
         "full_width": true,
+        implemented: true,
     },
     "n:g:z:triple_viewer": {
         "ng:n": "Graph Triples",
@@ -252,6 +261,7 @@ export const official_apps = {
         "ng:b": "ProseMirrorEditor",
         "ng:o": [],
         "ng:w": ["post:rich"],
+        implemented: true,
     },
     "n:g:z:post_md_editor": {
         "ng:n": "Post MD Editor",
@@ -263,6 +273,7 @@ export const official_apps = {
         "ng:o": [],
         "ng:w": ["post:md"],
         "full_width": true,
+        implemented: true,
     },
     "n:g:z:code_editor": {
         "ng:n": "Text Editor",
@@ -273,6 +284,7 @@ export const official_apps = {
         "ng:b": "CodeMirrorEditor",
         "ng:o": [],
         "ng:w": ["code*","post:text"],
+        implemented: true,
     },
     "n:g:z:file_viewer": {
         "ng:n": "File details",
@@ -303,6 +315,7 @@ export const official_apps = {
         "ng:b": "XmlSource", // displayed with highlight.js , with option to download
         "ng:o": ["post:rich","post:md","post:html","page","data:xml", "doc:diagram:drawio"],
         "ng:w": [],
+        implemented: true,
     },
     "n:g:z:viewer:md": { 
         "ng:n": "MarkDown source",
@@ -313,6 +326,7 @@ export const official_apps = {
         "ng:b": "MdSource", // displayed with highlight.js , with option to download
         "ng:o": ["post:md"],
         "ng:w": [],
+        implemented: true,
     },
     "n:g:z:crdt_source_viewer:json": { 
         "ng:n": "JSON Source",
@@ -324,6 +338,7 @@ export const official_apps = {
         "ng:o": ["data:json", "data:table", "doc:diagram:jsmind", "doc:diagram:gantt", "doc:diagram:excalidraw", "doc:viz:*", "doc:chart:*", "prod:cad"],
         "ng:w": [],
         "full_width": true,
+        implemented: true,
     },
     "n:g:z:crdt_source_viewer:ymap": { 
         "ng:n": "JSON Source",
@@ -334,6 +349,7 @@ export const official_apps = {
         "ng:b": "YMapSource", // displayed with highlight.js , with option to download
         "ng:o": ["data:map"],
         "ng:w": [],
+        implemented: true,
     },
     "n:g:z:crdt_source_viewer:yarray": { 
         "ng:n": "JSON Source",
@@ -344,6 +360,7 @@ export const official_apps = {
         "ng:b": "YArraySource", // displayed with highlight.js , with option to download
         "ng:o": ["data:array"],
         "ng:w": [],
+        implemented: true,
     },
     "n:g:z:crdt_source_viewer:text": {
         "ng:n": "Text source",
@@ -351,21 +368,23 @@ export const official_apps = {
         "ng:c": "app", 
         "ng:u": "source",//favicon. can be a did:ng:j 
         "ng:g": "n:g:z:crdt_source_viewer:text",
-        "ng:b": "TextViewer", // displayed with highlight.js , with option to download
+        "ng:b": "TextViewer", // displayed with highlight.js , with option to download and copy paste
         "ng:o": ["post:asciidoc", "service*", "contract", "query:sparql*","query:graphql","doc:diagram:mermaid","doc:diagram:graphviz","doc:diagram:flowchart",
                 "doc:diagram:sequence","doc:diagram:markmap","doc:diagram:mymind","doc:music*", "doc:maths", "doc:chemistry", "doc:ancientscript", "doc:braille", "media:subtitle"],
         "ng:w": [],
-    },
-    "n:g:z:crdt_source_viewer:rdf": {
-        "ng:n": "RDF source",
-        "ng:a": "See the source graph of this document, in RDF (turtle)",
-        "ng:c": "app", 
-        "ng:u": "source",//favicon. can be a did:ng:j 
-        "ng:g": "n:g:z:crdt_source_viewer:rdf",
-        "ng:b": "TurtleViewer", //, with option to download
-        "ng:o": ["data:graph"],
-        "ng:w": [],
-    },
+        implemented: true,
+    },
+    // "n:g:z:crdt_source_viewer:rdf": {
+    //     "ng:n": "RDF source",
+    //     "ng:a": "See the source graph of this document, in RDF (turtle)",
+    //     "ng:c": "app", 
+    //     "ng:u": "source",//favicon. can be a did:ng:j 
+    //     "ng:g": "n:g:z:crdt_source_viewer:rdf",
+    //     "ng:b": "TurtleViewer", //, with option to download
+    //     "ng:o": ["data:graph"],
+    //     "ng:w": [],
+    //     implemented: true,
+    // },
     "n:g:z:post:rich": {
         "ng:n": "Post",
         "ng:a": "View a Rich Post",
@@ -375,6 +394,7 @@ export const official_apps = {
         "ng:b": "ProseMirrorViewer", // https://www.npmjs.com/package/prosemirror-to-html-js or https://prosemirror.net/docs/ref/version/0.4.0.html#toDOM https://prosemirror.net/docs/ref/version/0.4.0.html#toHTML
         "ng:o": ["post:rich"],
         "ng:w": [],
+        implemented: true,
     },
     "n:g:z:post:md": {
         "ng:n": "Post",
@@ -385,6 +405,7 @@ export const official_apps = {
         "ng:b": "PostMdViewer", // https://github.com/wooorm/markdown-rs
         "ng:o": ["post:md"],
         "ng:w": [],
+        implemented: true,
     },
     "n:g:z:compose:editor": {
         "ng:n": "Composition Editor",
@@ -413,6 +434,7 @@ export const official_apps = {
         "ng:b": "TextViewer",
         "ng:o": ["post:text"],
         "ng:w": [],
+        implemented: true,
     },
     "n:g:z:pre": {
         "ng:n": "Source Code",
@@ -423,6 +445,7 @@ export const official_apps = {
         "ng:b": "TextViewer", // displayed with highlight.js 
         "ng:o": ["code*"],
         "ng:w": [],
+        implemented: true,
     },
     "n:g:z:pad": {
         "ng:n": "Pad",
@@ -481,6 +504,7 @@ export const official_apps = {
         "ng:u": "container",//favicon. can be a did:ng:j 
         "ng:g": "n:g:z:container", 
         "ng:b": "ContainerView",
+        implemented: true,
         "ng:o": ["data:collection","data:container"],
         "ng:w": ["data:collection","data:container"],
     },
diff --git a/ng-app/vite.config.ts b/ng-app/vite.config.ts
index 08d558c3..ce19e93d 100644
--- a/ng-app/vite.config.ts
+++ b/ng-app/vite.config.ts
@@ -30,12 +30,12 @@ export default defineConfig(async () => {
     "@codemirror/lang-javascript", "@codemirror/lang-rust", "@replit/codemirror-lang-svelte", "yjs", "y-codemirror.next", "svelte-codemirror-editor",
     "prosemirror-svelte", "prosemirror-svelte/state", "prosemirror-svelte/helpers", "y-prosemirror", "prosemirror-state", "prosemirror-model", "prosemirror-view", "y-protocols",
     "@milkdown/core", "@milkdown/ctx", "@milkdown/prose", "@milkdown/transformer", "@milkdown/preset-commonmark", "@milkdown/theme-nord", "@milkdown/plugin-collab",
-    "svelte-highlight", "svelte-highlight/languages/typescript", "svelte-highlight/languages/javascript", "svelte-highlight/languages/rust", "@milkdown/preset-gfm",
+    "svelte-highlight", "svelte-highlight/languages/typescript", "svelte-highlight/languages/markdown", "svelte-highlight/languages/xml", "svelte-highlight/languages/javascript", "svelte-highlight/languages/rust", "@milkdown/preset-gfm",
     "@milkdown-lab/plugin-split-editing", "@milkdown/plugin-slash", "@milkdown/utils", "@milkdown/plugin-prism", "@milkdown/plugin-emoji", "@milkdown/plugin-math", "@milkdown/plugin-indent",
     "svelte-jsoneditor", "@automerge/automerge/next", "@automerge/automerge/slim"],
 
     include: ["debug","extend","highlight.js","highlight.js/lib/core","lodash.debounce","@sindresorhus/is","char-regex","emojilib","skin-tone",
-      'immutable-json-patch', ]
+      'immutable-json-patch', "xml-beautifier" ]
       
   },
   worker: {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 79664c92..cdd1a57b 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -101,6 +101,7 @@ importers:
       vite-plugin-svelte-svg: ^2.2.1
       vite-plugin-top-level-await: ^1.3.1
       vite-plugin-wasm: ^3.2.2
+      xml-beautifier: ^0.5.0
       y-codemirror.next: ^0.3.5
       y-prosemirror: ^1.2.10
       y-protocols: ^1.0.1
@@ -172,6 +173,7 @@ importers:
       svelte-jsoneditor: 0.23.8_@lezer+common@1.2.1
       svelte-spa-router: 3.3.0
       vite-plugin-top-level-await: 1.3.1_vite@4.3.9
+      xml-beautifier: 0.5.0
       y-codemirror.next: 0.3.5_2derscuhaavtzv2sogf3enfvaa
       y-prosemirror: 1.2.10_t5dsb3fc2figoeqqliqhb3exne
       y-protocols: 1.0.6_yjs@13.6.18
@@ -3720,6 +3722,11 @@ packages:
       - supports-color
     dev: false
 
+  /repeat-string/1.6.1:
+    resolution: {integrity: sha512-PV0dzCYDNfRi1jCDbJzpW7jNNDRuCOG/jI5ctQcGKt/clZD+YcPS3yIlWuTJMmESC8aevCFmWJy5wjAFgNqN6w==}
+    engines: {node: '>=0.10'}
+    dev: false
+
   /require-from-string/2.0.2:
     resolution: {integrity: sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==}
     engines: {node: '>=0.10.0'}
@@ -4599,6 +4606,12 @@ packages:
   /wrappy/1.0.2:
     resolution: {integrity: sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==}
 
+  /xml-beautifier/0.5.0:
+    resolution: {integrity: sha512-QG/qiHeolHUd1tAtM+5zHxTzDprb8qvhmIYUYV1E9QK/jTFlrAa1Mz7QQqJPeqc3uuFAGzTOhjvbdx2hOP6bHw==}
+    dependencies:
+      repeat-string: 1.6.1
+    dev: false
+
   /y-codemirror.next/0.3.5_2derscuhaavtzv2sogf3enfvaa:
     resolution: {integrity: sha512-VluNu3e5HfEXybnypnsGwKAj+fKLd4iAnR7JuX1Sfyydmn1jCBS5wwEL/uS04Ch2ib0DnMAOF6ZRR/8kK3wyGw==}
     peerDependencies: