diff --git a/index.html b/index.html
index 4efa466..3654e83 100644
--- a/index.html
+++ b/index.html
@@ -4,314 +4,23 @@
   <head>
     <!-- Suggestions? https://git.benetou.fr/utopiah/text-code-xr-engine/issues/ -->
 
-    <!--<script src='dependencies/aframe.min.js'></script>-->
     <script src='dependencies/aframe.offline.min.js'></script>
     <script src="dependencies/a-console.js"></script>
-    <script src='dependencies/aframe-html.js'></script>
-    <script src='dependencies/aframe-mirror.js'></script>
     <script src='dependencies/aframe-troika-text.min.js'></script>
-    <!--<script type="module" id=immersbundle src='dependencies/immers-client.js?save=true'></script>-->
-    <!--<script type="module" id=immersbundle src="https://cdn.jsdelivr.net/npm/immers-client/dist/destination.bundle.js?role=modFull"></script>-->
-    <!--<script src="https://threejs.org/examples/js/exporters/GLTFExporter.js"></script>-->
-
-    <script src="https://cdn.jsdelivr.net/gh/c-frame/aframe-extras@7.1.0/dist/aframe-extras.min.js"></script>
 
     <script src="dependencies/shiki0.14.1.js"></script>
+    <!-- bit demanding but it IS about code too, so arguably important enough -->
 
-    <!-- for input sharing -->
-    <script src='dependencies/peerjs.min.js'></script>
-    <!-- for content sharing, using NAF 
-    <script src='dependencies/socket.io.slim.js'></script>
-    <script src="https://naf.benetou.fr/easyrtc/easyrtc.js"></script>
-    <script src='dependencies/networked-aframe.min.js'></script>
-    -->
-
-    <script src="dependencies/aframe-physics-system.min.js"></script>
-
-    <!-- still experimenting, see webdav.html -->
-    <script src='dependencies/webdav.js'></script> 
-
-    <script src='jxr.js?212345'></script> 
-    <!-- replacing with local copies as CDNs are like unpkg tend to be slow
-    <script type="module" src="https://unpkg.com/immers-client/dist/destination.bundle.js"></script>
-    <script src="https://aframe.io/releases/1.3.0/aframe.min.js"></script>
-
-    <script src="https://unpkg.com/aframe-troika-text/dist/aframe-troika-text.min.js"></script>
-    <script src="aframe-html.js"></script>
-
-    <script src="https://unpkg.com/peerjs@1.4.5/dist/peerjs.min.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.4.0/socket.io.slim.js"></script>
-    <script src="https://naf.benetou.fr/easyrtc/easyrtc.js"></script>
-    <script src="https://unpkg.com/networked-aframe@^0.10.0/dist/networked-aframe.min.js"></script>
-
-    <script src="https://cdn.jsdelivr.net/npm/aframe-mirror@latest/index.js"></script>
-	 -->
-
-    <link rel="apple-touch-icon" sizes="180x180" href="apple-touch-icon.png">
-    <link rel="icon" type="image/png" sizes="32x32" href="favicon-32x32.png">
-    <link rel="icon" type="image/png" sizes="16x16" href="favicon-16x16.png">
-    <link rel="manifest" href="site.webmanifest">
+    <script src='jxr.js'></script> 
   </head>
   <body>
 
 <script>
-function loadFile(element){
-	const file = element.files[0]
-	const reader = new FileReader();
-
-	let gltfEl = document.createElement('a-gltf-model')
-	gltfEl.setAttribute('position', '0 1 -1')
-	AFRAME.scenes[0].appendChild(gltfEl)
-	reader.addEventListener( "load", () => {
-		gltfEl.addEventListener("model-loaded", e => inspectModel(gltfEl.object3D) )
-		// never seems to fire
-		gltfEl.setAttribute('src', reader.result)
-		gltfEl.setAttribute('animation-mixer', "")
-		setTimeout( _ => {
-			console.log( inspectModel(gltfEl.object3D) )
-		}, 1000)
-	}, false,);
-
-	if (file) {
-		reader.readAsDataURL(file);
-	}
-
-}
-
-function inspectModel(selectedModel){
-  let animations=[];
-  let foundBones=[];
-  let skinnedMeshes=[];
-  let morphTargets=[];
-  selectedModel.traverse( t => { 
-    if (t.animations?.length) animations.push(t)
-    if (t.type == "Bone")  foundBones.push(t)
-    if (t.type == "SkinnedMesh")  skinnedMeshes.push(t)
-    if (t.morphTargetInfluences) morphTargets.push(t) // modelInspected.morphTargets.map(mt => mt.morphTargetInfluences.fill(0))
-  });
-  return {animations:animations, bones:foundBones, skinnedMeshes: skinnedMeshes, morphTargets:morphTargets}
-}
-
-function manualAnimate(selector="#biggu"){
-	inspectModel( document.querySelector(selector).object3D ).animations[0].animations.map( (a,n) =>
-		addNewNote('jxr document.querySelector('+selector+').setAttribute("animation-mixer", "clip:'+a.name+';loop:once")', '-1 '+(n/10+1)+' -1')
-	)
-}
-
-// see https://biggu-backend-collab.glitch.me/ to insure steps are done correctly
-function shareLiveEvent(eventName, server='https://biggu-backend-collab.glitch.me/'){
-  if (eventName.length > 0) fetch(server+'/newevent/'+eventName)
-}
-// should then become a container hosted on benetou.fr
-
-function saveTargets(server='https://biggu-backend-collab.glitch.me/'){
-  // might try to generate a hash as ID, should be reproducible though
-  let data = []
-  Array.from( document.querySelectorAll("[target]") )
-    .filter( el => el.id != '')
-    .map( el => {
-      // limited to location/position for now as that's only what target does modify
-      if( hasBeenManipulated(el.getAttribute('position')) || hasBeenManipulated(el.getAttribute('rotation')) )
-        data.push({id:el.id, position:el.getAttribute('position'), rotation:el.getAttribute('rotation')})
-  })
-  if (data.length > 0) fetch(server+'/save?data='+JSON.stringify(data))
-  return data
-}
-
-function animateThenIdle(mainCharacter, animationName, timeScale='1'){
-	mainCharacter.setAttribute('animation-mixer', "clip:"+animationName+";loop:once; timeScale:"+timeScale)
-	mainCharacter.addEventListener('animation-finished', _ => {
-		mainCharacter.setAttribute('animation-mixer', "clip:bigguaction_idle; loop:true;")
-	})
-	// could return the animation duration or an event when done
-}
-
-function checkExerciseCompletion(targetNumber=2){
-	const instructions = document.querySelector("#instructions>a-troika-text")
-	let counter = 0
-	const mainCharacter = document.getElementById("biggu")
-	mainCharacter.addEventListener("animation-finished", _ => console.log('anim done'))
-	Array.from( document.querySelector("#fishes").children ).map( f => {
-		if (f.object3D.position.distanceTo( document.querySelector('#plate').object3D.position ) < .3 ) counter++ })
-	if (counter == targetNumber) {
-		instructions.emit('win')
-		shareLiveEvent('win')
-		document.getElementById("biggubravojulia").play()
-		animateThenIdle(mainCharacter, 'bigguaction_win')
-	} else {
-		document.getElementById("biggucontinu").play()
-		instructions.emit('failed', {counter:counter})
-		shareLiveEvent('failed'+' '+counter)
-		animateThenIdle(mainCharacter, 'bigguaction_yes')
-	// anims = [ "bigguaction_no", "Bigguaction_pl", "bigguaction_pr", "bigguaction_talk", "bigguaction_win", "bigguaction_win", "bigguaction_yes" ]
-	}
-}
-
-// much too complex
-AFRAME.registerComponent('exercise', {
-  schema: {
-    instructions: {type: 'string'},
-    win: {type: 'string'},
-    failed: {type: 'string'},
-    next: {type: 'selector'},
-    first: {type: 'boolean', default: false},
-  },
-	init: function(){
-		const mainCharacter = document.getElementById("biggu")
-		mainCharacter.setAttribute('animation-mixer', "clip:bigguaction_idle; loop:true;")
-		const emittedExerciseId = this.el.id
-		const instructions = document.querySelector("#instructions>a-troika-text")
-		if (!this.data.first)
-			this.el.setAttribute('position', '0 0 9999')
-		else
-			instructions.setAttribute("value", this.data.instructions )
-		instructions.addEventListener('win', _ => {
-			instructions.setAttribute("value", this.data.win ) 
-			// use whatever last exercise set, not correct
-			// should setTimeout or let the player actively move on
-			this.el.setAttribute('position', '0 0 9999')
-			// must filter on id, making sure it's emited by matching excercise
-			if (this.data.next) {
-				console.log( this.data.next )
-				console.log( this.data.next.id )
-				this.data.next.setAttribute('position', '0 0 0')
-			}
-		})
-		instructions.addEventListener('failed', ev => {
-			instructions.setAttribute("value", this.data.failed ) 
-			console.log(emittedExerciseId, this.id)
-		})
-		// should be replaced by drawings or even scaled down models with "5" and arrow or hand model
-	}
-})
-
-// for more complete supervision consider remote scrcpy
-AFRAME.registerComponent('start-with-supervision', {
-  init: function(){
-	const server='https://biggu-backend-collab.glitch.me'
-	// CORS enabled needed
-	const source = new EventSource(server+'/events');
-
-	source.addEventListener('message', message => {
-	  console.log('Got', message);
-	  if (message.data == '"start-with-supervision"') startExercise()
-	})
-  }
-})
-
-function startExercise(){
-	const maxFishes = 5
-	for (let i=0;i<maxFishes;i++){
-		let gltfEl = document.createElement('a-gltf-model')
-		gltfEl.setAttribute("ondrop","checkExerciseCompletion()")
-		gltfEl.setAttribute("target","true")
-		gltfEl.setAttribute("scale",".001 .001 .001")
-		gltfEl.setAttribute("src","../content/winterset/Fish.glb")
-		let x = Math.random()*1-1
-		let y = Math.random()*1-.5
-		let z = Math.random()*1-1
-		gltfEl.setAttribute("position",`${x} ${y} ${z}`)
-		//console.log("position",`${x} ${y} ${z}`)
-		document.querySelector("#fishes").appendChild(gltfEl)
-	} // might want to appear from the start
-	// audio does not match asset, should be a white bowl, not black
-
-	document.getElementById("exerciseA").setAttribute("visible", false)
-	// hide everything until this is done, otherwise overwhelming
-	const mainCharacter = document.getElementById("biggu")
-	setTimeout(_=>{
-		document.getElementById("biggucestmoi").play()
-		// works in XR on headset, not on desktop (needs user action)
-		animateThenIdle(mainCharacter, 'bigguaction_talk', .5)
-	},1000)
-	// should focus on learning pinch (thumb and index) before doing the exercise itself
-	setTimeout(_=>{
-		document.getElementById("exerciseA").setAttribute("visible", true)
-		document.getElementById("bigguinstructions").play()
-		animateThenIdle(mainCharacter, 'bigguaction_talk', .5)
-	},5000)
-}
-
-AFRAME.registerComponent('warmup', {
-	init: function(){
-		startExercise()
-	}
-})
-
+	// custom components go here
 </script>
-<input style='position:fixed;z-index:1; top: 0%; left: 20%; display:none' 
-	type="file" name="file-input" accept=".gltf, .glb"  id="file-input" onchange="loadFile(this)" />
-<div style='position:fixed;z-index:1; top: 0%; left: 0%; border-bottom: 70px solid transparent; border-left: 70px solid #eee; '>
-	<a href="https://git.benetou.fr/utopiah/text-code-xr-engine/issues/">
-		<img style='position:fixed;left:10px;' title='code repository' src='gitea_logo.svg'>
-	</a>
-</div>
-
-<button id=mainbutton style="display:none; z-index: 1; position: absolute; width:50%; margin: auto; text-align:center; top:45%; left:30%; height:30%;" onclick="startExperience()">Start the experience (hand tracking recommended)</button>
-
-<a-scene startfunctions start-with-supervision>
-	<!-- screenstack dynamic-view selectionboxonpinches glossary timeline issues fot
-	toolbox commands-from-external-json disable-components-via-url enable-components-via-url 
-	physics="debug:true; friction: 0.01;" 
-	networked-scene="serverURL: https://naf.benetou.fr/; adapter: easyrtc; audio: true;"
-	refresh-text-content-from-wiki-page="pagename:TestingPairCollaboration"
-	-->
-      <a-assets>
-	      <audio id="biggucestmoi" src="../content/voicesBigguJulia/biggu-fem.mp3"></audio>
-	      <audio id="biggubravojulia" src="../content/voicesBigguJulia/bravojulia.mp3"></audio>
-	      <audio id="biggucontinu" src="../content/voicesBigguJulia/continu.mp3"></audio>
-	      <audio id="bigguinstructions" src="../content/voicesBigguJulia/instructions.mp3"></audio>
-	      <template id="avatar-template"></template>
-	      <template id="left-hand-default-template">
-		      <a-entity networked-hand-controls="hand:left"></a-entity>
-	      </template>
-	      <template id="right-hand-default-template">
-		      <a-entity networked-hand-controls="hand:right"></a-entity>
-	      </template>
-      </a-assets>
-
-	<!-- 
-../content/winterset/Pinetree.glb
-../content/winterset/Penguin.glb
-../content/winterset/Mountains.glb
-../content/winterset/Crystal.glb
-      <a-entity hide-on-enter-ar="" id="environment" class="hidableenvironment" ></a-entity>
-      <a-entity hide-on-enter-ar="" id="environmentsky" class="hidableenvironment" ></a-entity>
-	-->
-      <a-gltf-model hide-on-enter-ar="" src="../content/winterset/WinterIsland.glb" position="2.1 -4.5 -1.7" ></a-gltf-model>
-      <a-gltf-model src="../content/winterset/WinterSled.glb" position="0.11322 0.14197 0.27573" ></a-gltf-model>
-
-      <a-entity id="bubble" position="0 1 -1" scale=".1 .1 .1">
-	<a-sphere scale="2 1 .1" color="white"></a-sphere>
-	<a-cone scale="2 1 .1" position="-.5 -.7 0" rotation="0 0 45" color="white"></a-cone>
-	<a-troika-text value="C'est moi Biggu!" font-size=".4" outline-color="gray" outline-width=".02"
-		align="center" color="black" position="0 0 .2"></a-troika-text>
-      </a-entity>
-
-      <a-entity id="instructions" position="0.5 0.7 -1" rotation="0 -20 0" scale=".07 .07 .07">
-	<a-sphere scale="2 1 .1" color="white"></a-sphere>
-	<a-cone scale="2 1 .1" position="-.5 -.7 0" rotation="0 0 45" color="white"></a-cone>
-	<a-troika-text value="" font-size=".3" outline-color="gray" outline-width=".02"
-		align="center" color="black" position="0 0 .2"></a-troika-text>
-      </a-entity>
-
-      <a-troika-text anchor=left target annotation="content:RECOMMENCER"
-	value="jxr startExercise()" position=" -0.3 0.60 .5" rotation="90 180 0" scale="0.1 0.1 0.1"></a-troika-text>
-
-      <a-entity id="exerciseA" exercise="first:true;next:#exerciseB;instructions:Pose 2 poissons\ndans l'assiette;win:Bravo Julia!;failed:presque Julia, continue;">
-	      <a-entity id="fishes"></a-entity>
-		<a-gltf-model id="plate" src="../content/winterset/BowlWhite.glb" position="-0.397 0.14354 -0.508" scale="0.1 0.05 0.1" ></a-gltf-model>
-      </a-entity>
-      <a-gltf-model id="biggu" src="../content/winterset/SK_Biggu_v029_optimized.glb" position="-0.3 0.5 -1">
-	  <!-- <a-sound src="#bigguinstructions"></a-sound> -->
-      </a-gltf-model>
-
-      <a-gltf-model src="../content/winterset/Crystal_iPoly3D.glb" position="-0.29409 -0.23524 -0.83481" scale="0.1 0.1 0.1"></a-gltf-model>
-      <a-gltf-model src="../content/winterset/FruitBowl.glb" position="-0.29409 -.23524 -0.83481" scale="0.1 0.1 0.1"></a-gltf-model>
+<a-scene startfunctions>
       <a-entity id="rig">
-		<a-entity id="player" networked="template:#avatar-template;attachTemplateToLocal:false;" 
-			hud camera look-controls wasd-controls waistattach="target: .movebypinch" position="0 1.6 0">
-		</a-entity>
+		<a-entity id="player" hud camera look-controls wasd-controls waistattach="target: .movebypinch" position="0 1.6 0"></a-entity>
 		<a-entity id="rightHand" pinchprimary hand-tracking-controls="hand: right;"></a-entity>
 		<a-entity id="leftHand" pinchsecondary wristattachsecondary="target: #box" hand-tracking-controls="hand: left;"></a-entity>
       </a-entity>
@@ -320,31 +29,17 @@ AFRAME.registerComponent('warmup', {
       <!-- could attach functions here... BUT then they have to be activable with the other hand! -->
       <!-- visual reminders of shortcuts, a poster on the far left/right of keyboard shortcuts -->
 
-      <a-entity light="type: ambient; color: #BBB; intensity: 0.6"></a-entity>
-      <a-entity light="type: directional; color: #FFF; intensity: 1.4" position="-0.5 1 1"></a-entity>
-
       <a-troika-text value="SpaSca : Spatial Scaffolding" anchor="left" outline-width="5%" font="../content/ChakraPetch-Regular.ttf" position="-5.26197 6.54224 -1.81284"
 	scale="4 4 5" rotation="90 0 0" troika-text="outlineWidth: 0.01; strokeColor: #ffffff" material="flatShading: true; blending: additive; emissive: #c061cb"></a-troika-text>
       <a-sky hide-on-enter-ar color="lightgray"></a-sky>
       <a-troika-text anchor=left target value="instructions : \n--right pinch to move\n--left pinch to execute" position="0 0.65 -0.2" scale="0.1 0.1 0.1"></a-troika-text>
       
       <!-- 
-      <a-troika-text anchor=left target id="startdraw2d" annotation="content:dessiner en 2D"
-		value="jxr startDraw2D()" position="0 1.45 -0.1" scale="0.1 0.1 0.1"></a-troika-text>
-
-      <a-troika-text anchor=left target id="displaypred" value="jxr displayPred()" position="0 1.40 -0.1" scale="0.1 0.1 0.1"></a-troika-text>
-      <a-troika-text anchor=left target value="jxr tiltUpId('codeditor')" position=" -0.3 1.65 0" rotation="0 90 0" scale="0.1 0.1 0.1"></a-troika-text>
-      <a-troika-text anchor=left target value="jxr tiltDownId('codeditor')" position=" -0.3 1.60 0" rotation="0 90 0" scale="0.1 0.1 0.1"></a-troika-text>
-	-->
-
-      <!-- somehow disable hand interaction despite, according to the documentation, it should rely on world position 
-	      <a-text target value="jxr qs #rig sa position 0 0 10" position="0 1.55 .5" rotation="0 180 0" scale="0.1 0.1 0.1"></a-text>
       <a-console position="2 2 0" rotation="0 -45 0" font-size="34" height=1 skip-intro=true></a-console>
 	-->
 
-      <!-- for Wolvic on Lynx support test -->
-      <a-entity thumbstick-shifting oculus-touch-controls="hand: left"></a-entity>
-      <a-entity thumbstick-shifting oculus-touch-controls="hand: right"></a-entity>
+      <a-troika-text anchor=left target id="locationreload" value="jxr location.reload()" position="0 1.20 -0.1" scale="0.1 0.1 0.1"></a-troika-text>
+      <a-troika-text anchor=left target id="makeAnchorsVisibleOnTargets" value="jxr makeAnchorsVisibleOnTargets()" position="0 1.05 -0.1" scale="0.1 0.1 0.1"></a-troika-text>
 
     </a-scene>
   </body>
