diff --git a/assets/licenses.txt b/assets/licenses.txt
index 4d68109..bb39b4a 100644
--- a/assets/licenses.txt
+++ b/assets/licenses.txt
@@ -1360,6 +1360,42 @@ THE SOFTWARE.
 
 -----------
 
+The following npm package may be included in this product:
+
+ - js-base64@3.7.7
+
+This package contains the following license:
+
+Copyright (c) 2014, Dan Kogai
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of {{{project}}} nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+-----------
+
 The following npm package may be included in this product:
 
  - estree-walker@2.0.2
diff --git a/frontend/App.vue b/frontend/App.vue
index fc3e384..d7bab44 100644
--- a/frontend/App.vue
+++ b/frontend/App.vue
@@ -11,9 +11,9 @@ import {NetworkManager, NetworkUpdateEvent, NetworkUpdateEventModel} from "./mis
 import {SceneMgr} from "./misc/scene";
 import {Document} from "@gltf-transform/core";
 import type ModelViewerWrapperT from "./viewer/ModelViewerWrapper.vue";
-import {mdiPlus} from '@mdi/js'
+import {mdiCube, mdiPlus, mdiScriptTextPlay} from '@mdi/js'
+// @ts-expect-error
 import SvgIcon from '@jamescoyle/vue-icon';
-import {toBuffer} from "./misc/gltf.ts";
 
 // NOTE: The ModelViewer library is big (THREE.js), so we split it and import it asynchronously
 const ModelViewerWrapper = defineAsyncComponent({
@@ -22,7 +22,7 @@ const ModelViewerWrapper = defineAsyncComponent({
   delay: 0,
 });
 
-let openSidebarsByDefault: Ref<boolean> = ref(window.innerWidth > 1200);
+let openSidebarsByDefault: Ref<boolean> = ref(window.innerWidth > window.innerHeight);
 
 const sceneUrl = ref("")
 const viewer: Ref<InstanceType<typeof ModelViewerWrapperT> | null> = ref(null);
@@ -81,6 +81,7 @@ let networkMgr = new NetworkManager();
 networkMgr.addEventListener('update-early',
     (e) => viewer.value?.onProgress((e as CustomEvent<Array<any>>).detail.length * 0.01));
 networkMgr.addEventListener('update', (e) => onModelUpdateRequest(e as NetworkUpdateEvent));
+let preloadingModels = ref<Array<string>>([]);
 (async () => { // Start loading all configured models ASAP
   let sett = await settings();
   if (sett.preload.length > 0) {
@@ -91,17 +92,16 @@ networkMgr.addEventListener('update', (e) => onModelUpdateRequest(e as NetworkUp
       }
     });
     for (let model of sett.preload) {
-      await networkMgr.load(model);
+      preloadingModels.value.push(model);
+      let removeFromPreloadingModels = () => {
+        preloadingModels.value = preloadingModels.value.filter((m) => m !== model);
+      };
+      networkMgr.load(model).then(removeFromPreloadingModels).catch((e) => {
+        removeFromPreloadingModels()
+        console.error("Error preloading model", model, e);
+      });
     }
-  } else { // Skip to interface without models (useful for playground mode)
-    console.debug("Showing empty gltf document to load the interface without models.");
-    // FIXME: Empty document breaks the playground-loaded models (using preload seems to fix this, maybe __helpers issue?)
-    let emptyDoc = new Document();
-    emptyDoc.createScene();
-    let buffer = await toBuffer(emptyDoc);
-    let blob = new Blob([buffer], {type: 'model/gltf-binary'});
-    sceneUrl.value = URL.createObjectURL(blob);
-  }
+  } // else No preloaded models (useful for playground mode)
 })();
 
 async function loadModelManual() {
@@ -115,7 +115,28 @@ async function loadModelManual() {
 
     <!-- The main content of the app is the model-viewer with the SVG "2D" overlay -->
     <v-main id="main">
-      <model-viewer-wrapper ref="viewer" :src="sceneUrl"/>
+      <model-viewer-wrapper v-if="sceneDocument.getRoot().listMeshes().length > 0" ref="viewer" :src="sceneUrl"/>
+      <!-- A nice no model loaded alternative to avoid breaking model-viewer-wrapper -->
+      <div v-else style="height: 100%; overflow-y: auto">
+        <v-toolbar-title class="text-center ma-16 text-h5">No model loaded</v-toolbar-title>
+        <v-btn @click="() => tools?.openPlayground()" class="mx-auto d-block my-4">
+          <svg-icon :path="mdiScriptTextPlay" type="mdi"/>&nbsp; Open playground...
+        </v-btn>
+        <v-btn @click="networkMgr.load('https://yeicor-3d.github.io/yet-another-cad-viewer/logo.glb')"
+               class="mx-auto d-block my-4">
+          <svg-icon :path="mdiCube" type="mdi"/>&nbsp; Load demo model...
+        </v-btn>
+        <v-btn @click="loadModelManual" class="mx-auto d-block my-4">
+          <svg-icon :path="mdiPlus" type="mdi"/>&nbsp; Load model manually...
+        </v-btn>
+        <span v-if="preloadingModels.length > 0" class="d-block text-center my-16">
+          <span class="d-block text-center text-h6">Still trying to load the following:</span>
+          <span class="d-block text-center" v-for="(model, index) in preloadingModels" :key="index">
+            {{ model }}<span v-if="index < preloadingModels.length - 1">, </span>
+          </span>
+        </span>
+
+      </div>
     </v-main>
 
     <!-- The left collapsible sidebar has the list of models -->
diff --git a/frontend/misc/IfNotSmallBuild.vue b/frontend/misc/IfNotSmallBuild.vue
index c2f9be4..ce13a66 100644
--- a/frontend/misc/IfNotSmallBuild.vue
+++ b/frontend/misc/IfNotSmallBuild.vue
@@ -1,6 +1,7 @@
 <script setup lang="ts">
 import {mdiLockQuestion} from "@mdi/js";
 import {VBtn, VTooltip} from "vuetify/lib/components/index.mjs";
+// @ts-expect-error
 import SvgIcon from "@jamescoyle/vue-icon";
 
 // @ts-expect-error
diff --git a/frontend/misc/Sidebar.vue b/frontend/misc/Sidebar.vue
index 9785f25..00dc312 100644
--- a/frontend/misc/Sidebar.vue
+++ b/frontend/misc/Sidebar.vue
@@ -2,6 +2,7 @@
 import {ref} from "vue";
 import {VBtn, VNavigationDrawer, VToolbar, VToolbarItems} from "vuetify/lib/components/index.mjs";
 import {mdiChevronLeft, mdiChevronRight, mdiClose} from '@mdi/js'
+// @ts-expect-error
 import SvgIcon from '@jamescoyle/vue-icon';
 
 const props = defineProps<{
diff --git a/frontend/misc/gltf.ts b/frontend/misc/gltf.ts
index 2c1614b..15f8081 100644
--- a/frontend/misc/gltf.ts
+++ b/frontend/misc/gltf.ts
@@ -1,5 +1,5 @@
 import {Buffer, Document, Scene, type Transform, WebIO} from "@gltf-transform/core";
-import {unpartition, mergeDocuments} from "@gltf-transform/functions";
+import {mergeDocuments, unpartition} from "@gltf-transform/functions";
 
 let io = new WebIO();
 export let extrasNameKey = "__yacv_name";
@@ -34,7 +34,9 @@ export async function mergePartial(url: string, name: string, document: Document
                 if (alreadyTried["draco"]) throw e; else alreadyTried["draco"] = true;
                 // WARNING: Draco decompression on web is really slow for non-trivial models! (it should work?)
                 let {KHRDracoMeshCompression} = await import("@gltf-transform/extensions")
+                // @ts-expect-error
                 let dracoDecoderWeb = await import("three/examples/jsm/libs/draco/draco_decoder.js");
+                // @ts-expect-error
                 let dracoEncoderWeb = await import("three/examples/jsm/libs/draco/draco_encoder.js");
                 io.registerExtensions([KHRDracoMeshCompression])
                     .registerDependencies({
diff --git a/frontend/misc/helpers.ts b/frontend/misc/helpers.ts
index 0a74df4..1f8f526 100644
--- a/frontend/misc/helpers.ts
+++ b/frontend/misc/helpers.ts
@@ -82,7 +82,7 @@ export function newAxes(doc: Document, size: Vector3, transform: Matrix4) {
  * The grid is built as a box of triangles (representing lines) looking to the inside of the box.
  * This ensures that only the back of the grid is always visible, regardless of the camera position.
  */
-export async function newGridBox(doc: Document, size: Vector3, baseTransform: Matrix4, divisions = 10) {
+export function newGridBox(doc: Document, size: Vector3, baseTransform: Matrix4, divisions = 10) {
     // Create transformed positions for the inner faces of the box
     let allPositions: number[] = [];
     let allIndices: number[] = [];
diff --git a/frontend/misc/scene.ts b/frontend/misc/scene.ts
index beb7f57..e6c188b 100644
--- a/frontend/misc/scene.ts
+++ b/frontend/misc/scene.ts
@@ -1,5 +1,5 @@
 import {type Ref} from 'vue';
-import {Document} from '@gltf-transform/core';
+import {Buffer, Document, Scene} from '@gltf-transform/core';
 import {extrasNameKey, extrasNameValueHelpers, mergeFinalize, mergePartial, removeModel, toBuffer} from "./gltf";
 import {newAxes, newGridBox} from "./helpers";
 import {Vector3} from "three/src/math/Vector3.js"
@@ -80,7 +80,19 @@ export class SceneMgr {
 
     private static async reloadHelpers(sceneUrl: Ref<string>, document: Document, reloadScene: boolean): Promise<Document> {
         let bb = SceneMgr.getBoundingBox(document);
-        if (!bb) return document;
+        if (!bb) return document; // Empty document, no helpers to show
+
+        // If only the helpers remain, go back to the empty scene
+        let noOtherModels = true;
+        for (let elem of document.getGraph().listEdges().map(e => e.getChild())) {
+            if (elem.getExtras() && !(elem instanceof Scene) && !(elem instanceof Buffer) &&
+                elem.getExtras()[extrasNameKey] !== extrasNameValueHelpers) {
+                // There are other elements in the document, so we can show the helpers
+                noOtherModels = false;
+                break;
+            }
+        }
+        if (noOtherModels) return await removeModel(extrasNameValueHelpers, document);
 
         // Create the helper axes and grid box
         let helpersDoc = new Document();
diff --git a/frontend/misc/settings.ts b/frontend/misc/settings.ts
index d62787e..0bf0327 100644
--- a/frontend/misc/settings.ts
+++ b/frontend/misc/settings.ts
@@ -43,21 +43,37 @@ export async function settings() {
             "12NgAAAAAgAB4iG8MwAAAABJRU5ErkJggg=="),
 
         // Playground settings
-        code: "", // Automatically loaded and executed code for the playground
+        pg_code: "", // Automatically loaded and executed code for the playground
+        pg_code_url: "", // URL to load the code from (overrides pg_code)
+        pg_opacity_loading: -1, // Opacity of the code during first load and run (< 0 is 0.0 if preload and 0.9 if not)
+        pg_opacity_loaded: 0.9, // Opacity of the code after it has been run for the first time
     };
 
-    // Auto-override any settings from the URL
+    // Auto-override any settings from the URL (either GET parameters or hash)
     const url = new URL(window.location.href);
     url.searchParams.forEach((value, key) => {
         if (key in settings) (settings as any)[key] = parseSetting(key, value, settings);
     })
+    if (url.hash.length > 0) { // Hash has bigger limits as it is not sent to the server
+        const hash = url.hash.slice(1);
+        const hashParams = new URLSearchParams(hash);
+        hashParams.forEach((value, key) => {
+            if (key in settings) (settings as any)[key] = parseSetting(key, value, settings);
+        });
+    }
 
-    // Auto-decompress the code
-    if (settings.code.length > 0) {
+    // Grab the code from the URL if it is set
+    if (settings.pg_code_url.length > 0) {
+        // If the code URL is set, override the code
         try {
-            settings.code = ungzip(b66Decode(settings.code), {to: 'string'});
+            const response = await fetch(settings.pg_code_url);
+            if (response.ok) {
+                settings.pg_code = await response.text();
+            } else {
+                console.warn("Failed to load code from URL:", settings.pg_code_url);
+            }
         } catch (error) {
-            console.warn("Failed to decompress code (assuming raw code):", error);
+            console.error("Error fetching code from URL:", settings.pg_code_url, error);
         }
     }
 
@@ -65,7 +81,7 @@ export async function settings() {
     for (let i = 0; i < settings.preload.length; i++) {
         let url = settings.preload[i];
         if (url === '<auto>') {
-            if (settings.code != "") { // <auto> means no preload URL if code is set
+            if (settings.pg_code != "") { // <auto> means no preload URL if code is set
                 settings.preload = settings.preload.slice(0, i).concat(settings.preload.slice(i + 1));
                 continue; // Skip this preload URL
             }
@@ -82,6 +98,20 @@ export async function settings() {
         }
         settings.preload[i] = url;
     }
+
+    // Auto-decompress the code and other playground settings
+    if (settings.pg_code.length > 0) {
+        try {
+            settings.pg_code = ungzip(b66Decode(settings.pg_code), {to: 'string'});
+        } catch (error) {
+            console.warn("Failed to decompress code (assuming raw code):", error);
+        }
+        if (settings.pg_opacity_loading < 0) {
+            // If the opacity is not set, use 0.0 if preload is set, otherwise 0.9
+            settings.pg_opacity_loading = settings.preload.length > 0 ? 0.0 : 0.9;
+        }
+    }
+
     settingsCache = settings;
     return settings;
 }
diff --git a/frontend/models/Model.vue b/frontend/models/Model.vue
index f9daa6c..2011773 100644
--- a/frontend/models/Model.vue
+++ b/frontend/models/Model.vue
@@ -25,6 +25,7 @@ import {
   mdiVectorLine,
   mdiVectorRectangle
 } from '@mdi/js'
+// @ts-expect-error
 import SvgIcon from '@jamescoyle/vue-icon';
 import {BackSide, FrontSide} from "three/src/constants.js";
 import {Box3} from "three/src/math/Box3.js";
@@ -34,6 +35,8 @@ import {Vector3} from "three/src/math/Vector3.js";
 import type {MObject3D} from "../tools/Selection.vue";
 import {toLineSegments} from "../misc/lines.js";
 import {settings} from "../misc/settings.js"
+import {currentSceneRotation} from "../viewer/lighting.ts";
+import {Matrix4} from "three/src/math/Matrix4.js";
 
 const props = defineProps<{
   meshes: Array<Mesh>,
@@ -115,7 +118,8 @@ function onWireframeChange(newWireframe: boolean) {
   if (!scene || !sceneModel) return;
   sceneModel.traverse((child: MObject3D) => {
     if (child.userData[extrasNameKey] === modelName) {
-      if (child.material && child.material.wireframe !== newWireframe) {
+      let childIsFace = child.type == 'Mesh' || child.type == 'SkinnedMesh'
+      if (child.material && child.material.wireframe !== newWireframe && childIsFace) {
         child.material.wireframe = newWireframe;
         child.material.needsUpdate = true;
       }
@@ -153,10 +157,11 @@ function onClipPlanesChange() {
           let offsetX = bbox.min.x + clipPlaneX.value * (bbox.max.x - bbox.min.x);
           let offsetY = bbox.min.y + clipPlaneY.value * (bbox.max.y - bbox.min.y);
           let offsetZ = bbox.min.z + (1 - clipPlaneZ.value) * (bbox.max.z - bbox.min.z);
+          let rotSceneMatrix = new Matrix4().makeRotationY(currentSceneRotation);
           let planes = [
-            new Plane(new Vector3(-1, 0, 0), offsetX),
-            new Plane(new Vector3(0, -1, 0), offsetY),
-            new Plane(new Vector3(0, 0, 1), -offsetZ),
+            new Plane(new Vector3(-1, 0, 0), offsetX).applyMatrix4(rotSceneMatrix),
+            new Plane(new Vector3(0, -1, 0), offsetY).applyMatrix4(rotSceneMatrix),
+            new Plane(new Vector3(0, 0, 1), -offsetZ).applyMatrix4(rotSceneMatrix),
           ];
           if (clipPlaneSwappedX.value) planes[0].negate();
           if (clipPlaneSwappedY.value) planes[1].negate();
@@ -227,9 +232,10 @@ function onEdgeWidthChange(newEdgeWidth: number) {
     line.userData.niceLine = line2;
     // line.parent!.remove(line); // Keep it for better raycast and selection!
     line2.userData.noHit = true;
+    line2.visible = enabledFeatures.value.includes(1);
     edgeWidthChangeCleanup.push(() => {
       line2.parent!.remove(line2);
-      line.visible = true;
+      line.visible = enabledFeatures.value.includes(1);
       props.viewer!!.onElemReady((elem) => {
         elem.removeEventListener('resize', () => resizeListener(elem));
       });
diff --git a/frontend/shims.d.ts b/frontend/shims.d.ts
deleted file mode 100644
index e657ea2..0000000
--- a/frontend/shims.d.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-// Avoids typescript error when importing some files
-declare module '@jamescoyle/vue-icon'
-declare module 'three-orientation-gizmo/src/OrientationGizmo'
-declare module 'three/examples/jsm/libs/draco/draco_decoder.js'
-declare module 'three/examples/jsm/libs/draco/draco_encoder.js'
\ No newline at end of file
diff --git a/frontend/tools/OrientationGizmo.vue b/frontend/tools/OrientationGizmo.vue
index dcbad7d..532bd51 100644
--- a/frontend/tools/OrientationGizmo.vue
+++ b/frontend/tools/OrientationGizmo.vue
@@ -1,12 +1,15 @@
 <script lang="ts" setup>
 import {onMounted, onUpdated, ref} from "vue";
 import type {ModelScene} from "@google/model-viewer/lib/three-components/ModelScene";
+// @ts-expect-error
 import * as OrientationGizmoRaw from "three-orientation-gizmo/src/OrientationGizmo";
+import type ModelViewerWrapper from "../viewer/ModelViewerWrapper.vue";
+import {currentSceneRotation} from "../viewer/lighting.ts";
 
 // Optimized minimal dependencies from three
 import {Vector3} from "three/src/math/Vector3.js";
 import {Matrix4} from "three/src/math/Matrix4.js";
-import type ModelViewerWrapper from "../viewer/ModelViewerWrapper.vue";
+import {Euler} from "three/src/math/Euler.js";
 
 (globalThis as any).THREE = {Vector3, Matrix4} as any // HACK: Required for the gizmo to work
 
@@ -48,7 +51,7 @@ function createGizmo(expectedParent: HTMLElement, scene: ModelScene): HTMLElemen
         axis.direction.y = -axis.direction.y;
         axis.direction.z = -axis.direction.z;
       }
-      wantedTheta = Math.atan2(axis.direction.x, axis.direction.z);
+      wantedTheta = Math.atan2(axis.direction.x, axis.direction.z) + currentSceneRotation;
       wantedPhi = Math.asin(-axis.direction.y) + Math.PI / 2;
       attempt++;
     }
@@ -66,7 +69,12 @@ let gizmo: HTMLElement & { update: () => void }
 
 function updateGizmo() {
   if (gizmo.isConnected) {
+    // HACK: Update camera temporarily to match skybox rotation before updating the gizmo and go back
+    let prevRot = ((gizmo as any).camera).rotation.clone() as Euler;
+    let thetaMat = new Matrix4().makeRotationY(-currentSceneRotation);
+    ((gizmo as any).camera).rotation.setFromRotationMatrix(thetaMat.multiply(new Matrix4().makeRotationFromEuler(prevRot)));
     gizmo.update();
+    ((gizmo as any).camera).rotation.set(prevRot.x, prevRot.y, prevRot.z);
     requestIdleCallback(updateGizmo, {timeout: 250});
   }
 }
diff --git a/frontend/tools/PlaygroundDialogContent.vue b/frontend/tools/PlaygroundDialogContent.vue
index 1e64ea0..80c0b1c 100644
--- a/frontend/tools/PlaygroundDialogContent.vue
+++ b/frontend/tools/PlaygroundDialogContent.vue
@@ -1,17 +1,19 @@
 <script setup lang="ts">
 import {setupMonaco} from "./monaco.ts";
 import {VueMonacoEditor} from '@guolao/vue-monaco-editor'
-import {nextTick, ref, shallowRef} from "vue";
+import {nextTick, onMounted, ref, shallowRef} from "vue";
 import Loading from "../misc/Loading.vue";
 import {newPyodideWorker} from "./pyodide-worker-api.ts";
-import {mdiCircleOpacity, mdiClose, mdiPlay, mdiReload, mdiShare} from "@mdi/js";
-import {VBtn, VCard, VCardText, VSlider, VSpacer, VToolbar, VToolbarTitle} from "vuetify/components";
+import {mdiCircleOpacity, mdiClose, mdiContentSave, mdiFolderOpen, mdiPlay, mdiReload, mdiShare} from "@mdi/js";
+import {VBtn, VCard, VCardText, VSlider, VSpacer, VToolbar, VToolbarTitle, VTooltip} from "vuetify/components";
+// @ts-expect-error
 import SvgIcon from '@jamescoyle/vue-icon';
 import {version as pyodideVersion} from "pyodide";
 import {gzip} from 'pako';
 import {b66Encode} from "./b66.ts";
 import {Base64} from 'js-base64'; // More compatible with binary data from python...
 import {NetworkUpdateEvent, NetworkUpdateEventModel} from "../misc/network.ts";
+import {settings} from "../misc/settings.ts";
 
 const props = defineProps<{ initialCode: string }>();
 const emit = defineEmits<{ close: [], updateModel: [NetworkUpdateEvent] }>()
@@ -24,6 +26,11 @@ const outputText = ref(``);
 
 function output(text: string) {
   outputText.value += text; // Append to output
+  // Avoid too much output, keep it reasonable
+  let max_output = 10000; // 10k characters
+  if (outputText.value.length > max_output) {
+    outputText.value = outputText.value.slice(-max_output); // Keep only the last 10k characters
+  }
   console.log(text); // Also log to console
   nextTick(() => { // Scroll to bottom
     const consoleElement = document.querySelector('.playground-console');
@@ -65,9 +72,10 @@ async function setupPyodide() {
   await pyodideWorker.asyncRun(`import micropip, asyncio
 micropip.set_index_urls(["https://yeicor.github.io/OCP.wasm", "https://pypi.org/simple"])
 await (micropip.install("lib3mf"))
-micropip.add_mock_package("py-lib3mf", "2.4.1", modules={"py_lib3mf": '''from lib3mf import *'''})
+micropip.add_mock_package("py-lib3mf", "2.4.1", modules={"py_lib3mf": 'from lib3mf import *'})
 await (micropip.install(["https://files.pythonhosted.org/packages/67/25/80be117f39ff5652a4fdbd761b061123c5425e379f4b0a5ece4353215d86/yacv_server-0.10.0a4-py3-none-any.whl"]))
-from yacv_server import *`, output, output); // Also import yacv_server here for faster custom code execution
+from yacv_server import *
+micropip.add_mock_package("ocp-vscode", "2.8.9", modules={"ocp_vscode": 'from yacv_server import *'})`, output, output); // Also import yacv_server and mock ocp_vscode here for faster custom code execution
   running.value = false; // Indicate that Pyodide is ready
   output("Pyodide worker initialized.\n");
 }
@@ -116,7 +124,7 @@ function onModelData(modelData: string) {
   if (openBrackets !== 0) throw `Error: Invalid model data received: ${modelData}\n`
   const jsonData = modelData.slice(0, i + 1); // Extract the JSON part and parse it into the proper class
   let modelMetadataRaw = JSON.parse(jsonData);
-  const modelMetadata: any = new NetworkUpdateEventModel(modelMetadataRaw.name, "Wait for it...", modelMetadataRaw.hash, modelMetadataRaw.is_remove)
+  const modelMetadata: any = new NetworkUpdateEventModel(modelMetadataRaw.name, "", modelMetadataRaw.hash, modelMetadataRaw.is_remove)
   // console.debug(`Model metadata:`, modelMetadata);
   output(`Model metadata: ${JSON.stringify(modelMetadata)}\n`);
   // - Now decode the rest of the model data which is a single base64 encoded glb file (or an empty string)
@@ -135,7 +143,6 @@ function onModelData(modelData: string) {
 }
 
 function resetWorker() {
-  code.value = props.initialCode; // Reset code to initial state
   if (pyodideWorker) {
     pyodideWorker.terminate(); // Terminate existing worker
     pyodideWorker = null; // Reset worker reference
@@ -146,18 +153,52 @@ function resetWorker() {
 
 function shareLink() {
   const baseUrl = window.location
-  const urlParams = new URLSearchParams(baseUrl.search); // Keep all previous URL parameters
-  urlParams.set('code', b66Encode(gzip(code.value, {level: 9}))); // Compress and encode the code
-  const shareUrl = `${baseUrl.origin}${baseUrl.pathname}?${urlParams.toString()}`;
+  const urlParams = new URLSearchParams(baseUrl.hash.slice(1)); // Keep all previous URL parameters
+  urlParams.set('pg_code', b66Encode(gzip(code.value, {level: 9}))); // Compress and encode the code
+  const shareUrl = `${baseUrl.origin}${baseUrl.pathname}${baseUrl.search}#${urlParams.toString()}`; // Prefer hash to GET (bigger limits)
   output(`Share link ready: ${shareUrl}\n`)
-  navigator.clipboard.writeText(shareUrl)
-      .then(() => output("Link copied to clipboard!\n"))
-      .catch(err => output(`Failed to copy link: ${err}\n`));
+  if (!navigator.clipboard) {
+    output("Clipboard API not available. Please copy the link manually.\n");
+    return;
+  } else {
+    navigator.clipboard.writeText(shareUrl)
+        .then(() => output("Link copied to clipboard!\n"))
+        .catch(err => output(`Failed to copy link: ${err}\n`));
+  }
+}
+
+function saveSnapshot() {
+  throw new Error("Not implemented yet!"); // TODO: Implement snapshot saving
+}
+
+function loadSnapshot() {
+  throw new Error("Not implemented yet!"); // TODO: Implement snapshot loading
 }
 
 const reused = (import.meta as any).hot?.data?.pyodideWorker !== undefined;
-setupPyodide().then(() => {
-  if (props.initialCode != "" && !reused) runCode();
+(async () => {
+  const sett = await settings()
+  if (!reused) opacity.value = sett.pg_opacity_loading
+  await setupPyodide()
+  if (props.initialCode != "" && !reused) await runCode();
+  if (!reused) opacity.value = sett.pg_opacity_loaded
+})()
+
+// Add keyboard shortcuts
+const editorRef = ref<HTMLElement | null>(null);
+onMounted(() => {
+  if (editorRef.value) {
+    console.log(editorRef.value)
+    editorRef.value.addEventListener('keydown', (event: Event) => {
+      if (!(event instanceof KeyboardEvent)) return; // Ensure event is a KeyboardEvent
+      if (event.key === 'Enter' && event.ctrlKey) {
+        event.preventDefault(); // Prevent default behavior of Enter key
+        runCode(); // Run code on Ctrl+Enter
+      } else if (event.key === 'Escape') {
+        emit('close'); // Close on Escape key
+      }
+    });
+  }
 });
 </script>
 
@@ -165,35 +206,59 @@ setupPyodide().then(() => {
   <v-card class="popup-card"
           :style="opacity == 0 ? `position: absolute; top: calc(-50vh + 24px); width: calc(100vw - 64px);` : ``">
     <v-toolbar class="popup">
-      <v-toolbar-title>Playground</v-toolbar-title>
+      <v-toolbar-title style="flex: 0 1 auto">Playground</v-toolbar-title>
       <v-spacer></v-spacer>
 
-      <svg-icon :path="mdiCircleOpacity" type="mdi"></svg-icon>
-      <v-slider v-model="opacity" :max="1" :min="0" :step="0.1"
-                style="max-width: 100px; height: 32px; margin-right: 16px;"></v-slider>
+      <span style="display: inline-flex; margin-right: 16px;">
+        <svg-icon :path="mdiCircleOpacity" type="mdi" style="height: 32px"></svg-icon>
+        <v-slider v-model="opacity" :max="1" :min="0" :step="0.1"
+                  style="width: 100px; height: 32px">
+        </v-slider>
+        <v-tooltip activator="parent"
+                   location="bottom">Opacity of the editor (0 = hidden, 1 = fully visible)</v-tooltip>
+      </span>
 
-      <!-- TODO: snapshots... -->
+      <span style="margin-right: -8px;"><!-- This span is only needed to force tooltip to work while button is disabled -->
+        <v-btn icon disabled @click="saveSnapshot()">
+          <svg-icon :path="mdiContentSave" type="mdi"/>
+        </v-btn>
+        <v-tooltip activator="parent"
+                   location="bottom">Save current state to a snapshot for fast startup (WIP)</v-tooltip>
+      </span>
+      <span style="margin-left: -8px"><!-- This span is only needed to force tooltip to work while button is disabled -->
+        <v-btn icon disabled @click="loadSnapshot()">
+          <svg-icon :path="mdiFolderOpen" type="mdi"/>
+        </v-btn>
+        <v-tooltip activator="parent" location="bottom">Load snapshot for fast startup (WIP)</v-tooltip>
+      </span>
 
       <v-btn icon @click="resetWorker()">
         <svg-icon :path="mdiReload" type="mdi"/>
+        <v-tooltip activator="parent" location="bottom">Reset Pyodide worker (this forgets all previous state and will
+          take a little while)
+        </v-tooltip>
       </v-btn>
 
-      <v-btn icon @click="runCode()">
+      <v-btn icon @click="runCode()" :disabled="running">
         <svg-icon :path="mdiPlay" type="mdi"/>
+        <Loading v-if="running" style="position: absolute; top: -16%; left: -16%"/><!-- Ugly positioning -->
+        <v-tooltip activator="parent" location="bottom">Run code</v-tooltip>
       </v-btn>
 
       <v-btn icon @click="shareLink()">
         <svg-icon :path="mdiShare" type="mdi"/>
+        <v-tooltip activator="parent" location="bottom">Share link that auto-runs the code</v-tooltip>
       </v-btn>
 
       <v-btn icon @click="emit('close')">
         <svg-icon :path="mdiClose" type="mdi"/>
+        <v-tooltip activator="parent" location="bottom">Close (Pyodide remains loaded)</v-tooltip>
       </v-btn>
     </v-toolbar>
     <v-card-text class="popup-card-text" :style="opacity == 0 ? `display: none` : ``">
       <!-- Only show content if opacity is greater than 0 -->
       <div class="playground-container">
-        <div class="playground-editor">
+        <div class="playground-editor" ref="editorRef">
           <VueMonacoEditor v-model:value="code" :theme="editorTheme" :options="MONACO_EDITOR_OPTIONS"
                            language="python" @mount="handleMount"/>
         </div>
@@ -212,6 +277,10 @@ setupPyodide().then(() => {
   background-color: #00000000; /* Transparent background */
 }
 
+.v-toolbar.popup > * {
+  overflow-x: auto;
+}
+
 .popup-card-text {
   background-color: #1e1e1e; /* Matches the Monaco editor background */
   opacity: v-bind(opacity);
diff --git a/frontend/tools/Selection.vue b/frontend/tools/Selection.vue
index 73f6386..3a22359 100644
--- a/frontend/tools/Selection.vue
+++ b/frontend/tools/Selection.vue
@@ -1,6 +1,7 @@
 <script lang="ts" setup>
 import {inject, ref, type ShallowRef, watch} from "vue";
 import {VBtn, VSelect, VTooltip} from "vuetify/lib/components/index.mjs";
+// @ts-expect-error
 import SvgIcon from '@jamescoyle/vue-icon';
 import type {ModelViewerElement} from '@google/model-viewer';
 import type {ModelScene} from "@google/model-viewer/lib/three-components/ModelScene";
@@ -28,7 +29,7 @@ let emit = defineEmits<{ findModel: [string] }>();
 let {setDisableTap} = inject<{ setDisableTap: (arg0: boolean) => void }>('disableTap')!!;
 let selectionEnabled = ref(false);
 let selected = defineModel<Array<SelectionInfo>>({default: []});
-let highlightNextSelection = ref([false, false]); // Second is whether selection was enabled before
+let openNextSelection = ref([false, false]); // Second is whether selection was enabled before
 let showBoundingBox = ref<Boolean>(false); // Enabled automatically on start
 let showDistances = ref<Boolean>(true);
 
@@ -149,7 +150,7 @@ let mouseUpListener = (event: MouseEvent) => {
       // Return the best hit
       [0] as Intersection<MObject3D> | undefined;
 
-  if (!highlightNextSelection.value[0]) {
+  if (!openNextSelection.value[0]) {
     // If we are selecting, toggle the selection or deselect all if no hit
     let selInfo: SelectionInfo | null = null;
     if (hit) selInfo = hitToSelectionInfo(hit);
@@ -171,7 +172,7 @@ let mouseUpListener = (event: MouseEvent) => {
     // Otherwise, highlight the model that owns the hit
     emit('findModel', hit.object.userData[extrasNameKey])
     // And reset the selection mode
-    toggleHighlightNextSelection()
+    toggleOpenNextSelection()
   }
   scene.queueRender() // Force rerender of model-viewer
 }
@@ -209,17 +210,17 @@ function toggleSelection() {
   setDisableTap(selectionEnabled.value);
 }
 
-function toggleHighlightNextSelection() {
-  highlightNextSelection.value = [
-    !highlightNextSelection.value[0],
-    highlightNextSelection.value[0] ? highlightNextSelection.value[1] : selectionEnabled.value
+function toggleOpenNextSelection() {
+  openNextSelection.value = [
+    !openNextSelection.value[0],
+    openNextSelection.value[0] ? openNextSelection.value[1] : selectionEnabled.value
   ];
-  if (highlightNextSelection.value[0]) {
+  if (openNextSelection.value[0]) {
     // Reuse selection code to identify the model
     if (!selectionEnabled.value) toggleSelection()
   } else {
-    if (selectionEnabled.value !== highlightNextSelection.value[1]) toggleSelection()
-    highlightNextSelection.value = [false, false];
+    if (selectionEnabled.value !== openNextSelection.value[1]) toggleSelection()
+    openNextSelection.value = [false, false];
   }
 }
 
@@ -427,6 +428,10 @@ defineExpose({deselect, updateBoundingBox, updateDistances});
 
 // Add keyboard shortcuts
 window.addEventListener('keydown', (event) => {
+  if ((event.target as any)?.tagName && ((event.target as any).tagName === 'INPUT' || (event.target as any).tagName === 'TEXTAREA')) {
+    // Ignore key events when an input is focused, except for text inputs
+    return;
+  }
   if (event.key === 's') {
     if (selectFilter.value == 'Any (S)') toggleSelection();
     else {
@@ -455,8 +460,8 @@ window.addEventListener('keydown', (event) => {
     toggleShowBoundingBox();
   } else if (event.key === 'd') {
     toggleShowDistances();
-  } else if (event.key === 'h') {
-    toggleHighlightNextSelection();
+  } else if (event.key === 'o') {
+    toggleOpenNextSelection();
   }
 });
 </script>
@@ -474,8 +479,8 @@ window.addEventListener('keydown', (event) => {
                 variant="underlined"/>
     </template>
   </v-tooltip>
-  <v-btn :color="highlightNextSelection[0] ? 'surface-light' : ''" icon @click="toggleHighlightNextSelection">
-    <v-tooltip activator="parent">(H)ighlight the next clicked element in the models list</v-tooltip>
+  <v-btn :color="openNextSelection[0] ? 'surface-light' : ''" icon @click="toggleOpenNextSelection">
+    <v-tooltip activator="parent">(O)pen the next clicked element in the models list</v-tooltip>
     <svg-icon :path="mdiFeatureSearch" type="mdi"/>
   </v-btn>
   <v-btn :color="showBoundingBox ? 'surface-light' : ''" icon @click="toggleShowBoundingBox">
diff --git a/frontend/tools/Tools.vue b/frontend/tools/Tools.vue
index a76b554..d56798e 100644
--- a/frontend/tools/Tools.vue
+++ b/frontend/tools/Tools.vue
@@ -13,7 +13,17 @@ import {
 import OrientationGizmo from "./OrientationGizmo.vue";
 import type {PerspectiveCamera} from "three/src/cameras/PerspectiveCamera.js";
 import {OrthographicCamera} from "three/src/cameras/OrthographicCamera.js";
-import {mdiClose, mdiCrosshairsGps, mdiDownload, mdiGithub, mdiLicense, mdiProjector, mdiScriptTextPlay} from '@mdi/js'
+import {
+  mdiClose,
+  mdiCrosshairsGps,
+  mdiDownload,
+  mdiGithub,
+  mdiLicense,
+  mdiLightbulb,
+  mdiProjector,
+  mdiScriptTextPlay
+} from '@mdi/js'
+// @ts-expect-error
 import SvgIcon from '@jamescoyle/vue-icon';
 import type {ModelViewerElement} from '@google/model-viewer';
 import Loading from "../misc/Loading.vue";
@@ -51,7 +61,7 @@ const sett = ref<any | null>(null);
 const showPlaygroundDialog = ref(false);
 (async () => {
   sett.value = await settings();
-  showPlaygroundDialog.value = sett.value.code != "";
+  showPlaygroundDialog.value = sett.value.pg_code != "";
 })();
 
 let selection: Ref<Array<SelectionInfo>> = ref([]);
@@ -130,10 +140,14 @@ function removeObjectSelections(objName: string) {
   selectionComp.value?.updateDistances();
 }
 
-defineExpose({removeObjectSelections});
+defineExpose({removeObjectSelections, openPlayground: () => showPlaygroundDialog.value = true});
 
 // Add keyboard shortcuts
-window.addEventListener('keydown', (event) => {
+document.addEventListener('keydown', (event) => {
+  if ((event.target as any)?.tagName && ((event.target as any).tagName === 'INPUT' || (event.target as any).tagName === 'TEXTAREA')) {
+    // Ignore key events when an input is focused, except for text inputs
+    return;
+  }
   if (event.key === 'p') toggleProjection();
   else if (event.key === 'c') centerCamera();
   else if (event.key === 'd') downloadSceneGlb();
@@ -155,6 +169,13 @@ window.addEventListener('keydown', (event) => {
     <v-tooltip activator="parent">Re(c)enter Camera</v-tooltip>
     <svg-icon :path="mdiCrosshairsGps" type="mdi"/>
   </v-btn>
+  <span>
+    <v-tooltip activator="parent">To rotate the light hold shift and drag the mouse or use two fingers<br/>
+    Note that this breaks slightly clipping planes for now... (restart to fix)</v-tooltip>
+    <v-btn icon disabled style="background: black;">
+      <svg-icon :path="mdiLightbulb" type="mdi"/>
+    </v-btn>
+  </span>
   <v-divider/>
   <h5>Selection ({{ selectionFaceCount() }}F {{ selectionEdgeCount() }}E {{ selectionVertexCount() }}V)</h5>
   <selection-component ref="selectionComp" v-model="selection" :viewer="props.viewer as any"
@@ -172,7 +193,7 @@ window.addEventListener('keydown', (event) => {
     </template>
     <template v-slot:default="{ isActive }">
       <if-not-small-build>
-        <playground-dialog-content v-if="sett != null" :initial-code="sett.code" @close="isActive.value = false"
+        <playground-dialog-content v-if="sett != null" :initial-code="sett.pg_code" @close="isActive.value = false"
                                    @update-model="(event: NetworkUpdateEvent) => emit('updateModel', event)"/>
       </if-not-small-build>
     </template>
diff --git a/frontend/viewer/lighting.ts b/frontend/viewer/lighting.ts
index 4d1cbe8..f82a903 100644
--- a/frontend/viewer/lighting.ts
+++ b/frontend/viewer/lighting.ts
@@ -2,12 +2,13 @@ import {ModelViewerElement} from '@google/model-viewer';
 import {$scene} from "@google/model-viewer/lib/model-viewer-base";
 import {settings} from "../misc/settings.ts";
 
+export let currentSceneRotation = 0; // radians, 0 is the default rotation
+
 export async function setupLighting(modelViewer: ModelViewerElement) {
     modelViewer[$scene].environmentIntensity = (await settings()).environmentIntensity;
     // Code is mostly copied from the example at: https://modelviewer.dev/examples/stagingandcameras/#turnSkybox
     let lastX: number;
     let panning = false;
-    let skyboxAngle = 0;
     let radiansPerPixel: number;
 
     const startPan = () => {
@@ -20,11 +21,11 @@ export async function setupLighting(modelViewer: ModelViewerElement) {
     const updatePan = (thisX: number) => {
         const delta = (thisX - lastX) * radiansPerPixel;
         lastX = thisX;
-        skyboxAngle += delta;
+        currentSceneRotation += delta;
         const orbit = modelViewer.getCameraOrbit();
         orbit.theta += delta;
         modelViewer.cameraOrbit = orbit.toString();
-        modelViewer.resetTurntableRotation(skyboxAngle);
+        modelViewer.resetTurntableRotation(currentSceneRotation);
         modelViewer.jumpCameraToGoal();
     }