diff --git a/dataforge-vis-common/build.gradle.kts b/dataforge-vis-common/build.gradle.kts
index 548c1be5..6459c337 100644
--- a/dataforge-vis-common/build.gradle.kts
+++ b/dataforge-vis-common/build.gradle.kts
@@ -37,7 +37,7 @@ kotlin {
         jsMain{
             dependencies {
                 api("hep.dataforge:dataforge-output-html:$dataforgeVersion")
-                api(npm("bootstrap","4.4.1"))
+                //api(npm("bootstrap","4.4.1"))
                 implementation(npm("jsoneditor"))
                 implementation(npm("file-saver"))
             }
diff --git a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/js/editor/bootstrap.kt b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/js/editor/bootstrap.kt
index 2f1e4595..171aa86d 100644
--- a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/js/editor/bootstrap.kt
+++ b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/js/editor/bootstrap.kt
@@ -1,8 +1,7 @@
 package hep.dataforge.vis.js.editor
 
-import kotlinx.html.TagConsumer
+import kotlinx.html.*
 import kotlinx.html.js.div
-import kotlinx.html.js.h3
 import org.w3c.dom.HTMLElement
 
 inline fun TagConsumer<HTMLElement>.card(title: String, crossinline block: TagConsumer<HTMLElement>.() -> Unit) {
@@ -12,4 +11,51 @@ inline fun TagConsumer<HTMLElement>.card(title: String, crossinline block: TagCo
             block()
         }
     }
+}
+
+fun TagConsumer<HTMLElement>.accordion(id: String, elements: Map<String, DIV.() -> Unit>) {
+    div("container-fluid") {
+        div("accordion") {
+            this.id = id
+            elements.entries.forEachIndexed { index, (title, builder) ->
+                val headerID = "${id}-${index}-heading"
+                val collapseID = "${id}-${index}-collapse"
+                div("card") {
+                    div("card-header") {
+                        this.id = headerID
+                        h5("mb-0") {
+                            button(classes = "btn btn-link collapsed", type = ButtonType.button) {
+                                attributes["data-toggle"] = "collapse"
+                                attributes["data-target"] = "#$collapseID"
+                                attributes["aria-expanded"] = "false"
+                                attributes["aria-controls"] = collapseID
+                                +title
+                            }
+                        }
+                    }
+                    div("collapse") {
+                        this.id = collapseID
+                        attributes["aria-labelledby"] = headerID
+                        attributes["data-parent"] = "#$id"
+                        div("card-body", block = builder)
+                    }
+                }
+            }
+        }
+    }
+}
+
+class AccordionBuilder {
+    private val map = HashMap<String, DIV.() -> Unit>()
+    fun entry(title: String, block: DIV.() -> Unit) {
+        map[title] = block
+    }
+
+    fun build(consumer: TagConsumer<HTMLElement>, id: String) {
+        consumer.accordion(id, map)
+    }
+}
+
+fun TagConsumer<HTMLElement>.accordion(id: String, block: AccordionBuilder.() -> Unit) {
+    AccordionBuilder().apply(block).build(this, id)
 }
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeLabelFactory.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeLabelFactory.kt
index c3e1024a..54e0ae03 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeLabelFactory.kt
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeLabelFactory.kt
@@ -25,7 +25,7 @@ object ThreeLabelFactory : ThreeFactory<Label3D> {
         } )
         return Mesh(textGeo, getMaterial(obj)).apply {
             updatePosition(obj)
-            obj.onPropertyChange(this@ThreeLabelFactory){name: Name, before: MetaItem<*>?, after: MetaItem<*>? ->
+            obj.onPropertyChange(this@ThreeLabelFactory){ _: Name, _: MetaItem<*>?, _: MetaItem<*>? ->
                 //TODO
             }
         }
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt
index 11117b27..e5c99efe 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt
@@ -74,8 +74,8 @@ class ThreePlugin : AbstractPlugin() {
                             return@onChildrenChange
                         }
 
-                        val parentName = name.cutLast()
-                        val childName = name.last()!!
+//                        val parentName = name.cutLast()
+//                        val childName = name.last()!!
 
                         //removing old object
                         findChild(name)?.let { oldChild ->
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/outputConfig.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/outputConfig.kt
index f27a6754..70afb07d 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/outputConfig.kt
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/outputConfig.kt
@@ -1,7 +1,7 @@
 package hep.dataforge.vis.spatial.three
 
 import hep.dataforge.js.requireJS
-import hep.dataforge.vis.js.editor.card
+import hep.dataforge.vis.js.editor.accordion
 import hep.dataforge.vis.spatial.Visual3D
 import hep.dataforge.vis.spatial.VisualGroup3D
 import kotlinx.html.InputType
@@ -28,7 +28,64 @@ private fun saveData(event: Event, fileName: String, mimeType: String = "text/pl
 fun Element.displayCanvasControls(canvas: ThreeCanvas, block: TagConsumer<HTMLElement>.() -> Unit = {}) {
     clear()
     append {
-        card("Settings") {
+        accordion("controls") {
+            entry("Settings") {
+                div("row") {
+                    div("col-2") {
+                        label("checkbox-inline") {
+                            input(type = InputType.checkBox).apply {
+                                checked = canvas.axes.visible
+                                onChangeFunction = {
+                                    canvas.axes.visible = checked
+                                }
+                            }
+                            +"Axes"
+                        }
+                    }
+                    div("col-1") {
+                        button {
+                            +"Export"
+                            onClickFunction = {
+                                val json = (canvas.content as? VisualGroup3D)?.let { group ->
+                                    Visual3D.json.stringify(
+                                        VisualGroup3D.serializer(),
+                                        group
+                                    )
+                                }
+                                if (json != null) {
+                                    saveData(it, "object.json", "text/json") {
+                                        json
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            entry("Layers") {
+                div("row") {
+                    (0..11).forEach { layer ->
+                        div("col-1") {
+                            label { +layer.toString() }
+                            input(type = InputType.checkBox).apply {
+                                if (layer == 0) {
+                                    checked = true
+                                }
+                                onChangeFunction = {
+                                    if (checked) {
+                                        canvas.camera.layers.enable(layer)
+                                    } else {
+                                        canvas.camera.layers.disable(layer)
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+/*        card("Settings") {
             div("row") {
                 div("col-2") {
                     label("checkbox-inline") {
@@ -81,7 +138,7 @@ fun Element.displayCanvasControls(canvas: ThreeCanvas, block: TagConsumer<HTMLEl
                     }
                 }
             }
-        }
+        }*/
         block()
     }
 }
\ No newline at end of file
diff --git a/demo/gdml/src/jsMain/kotlin/hep/dataforge/vis/spatial/gdml/demo/GDMLDemoApp.kt b/demo/gdml/src/jsMain/kotlin/hep/dataforge/vis/spatial/gdml/demo/GDMLDemoApp.kt
index 357962c1..88a948f3 100644
--- a/demo/gdml/src/jsMain/kotlin/hep/dataforge/vis/spatial/gdml/demo/GDMLDemoApp.kt
+++ b/demo/gdml/src/jsMain/kotlin/hep/dataforge/vis/spatial/gdml/demo/GDMLDemoApp.kt
@@ -124,7 +124,7 @@ private class GDMLDemoApp : Application {
         //val url = URL("https://drive.google.com/open?id=1w5e7fILMN83JGgB8WANJUYm8OW2s0WVO")
 
         val canvasElement = document.getElementById("canvas") ?: error("Element with id 'canvas' not found on page")
-        val configElement = document.getElementById("layers") ?: error("Element with id 'layers' not found on page")
+        val configElement = document.getElementById("config") ?: error("Element with id 'layers' not found on page")
         val treeElement = document.getElementById("tree") ?: error("Element with id 'tree' not found on page")
         val editorElement = document.getElementById("editor") ?: error("Element with id 'editor' not found on page")
         canvasElement.clear()
@@ -182,9 +182,9 @@ private class GDMLDemoApp : Application {
 //        canvas.clickListener = ::selectElement
 
             //tree.visualObjectTree(visual, editor::propertyEditor)
-            treeElement.displayObjectTree(visual) { name ->
-                selectElement(name)
-                canvas.highlight(name)
+            treeElement.displayObjectTree(visual) { treeName ->
+                selectElement(treeName)
+                canvas.highlight(treeName)
             }
             canvas.render(visual)
 
diff --git a/demo/gdml/src/jsMain/web/index.html b/demo/gdml/src/jsMain/web/index.html
index 5b9bb025..6a8a8ebe 100644
--- a/demo/gdml/src/jsMain/web/index.html
+++ b/demo/gdml/src/jsMain/web/index.html
@@ -4,24 +4,26 @@
     <meta charset="utf-8">
     <!--    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">-->
     <title>Three js demo for particle physics</title>
-    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
-          integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
-    <link rel="stylesheet" href="css/main.css">
-    <link rel="stylesheet" href="css/jsoneditor.min.css">
     <script type="text/javascript" src="main.bundle.js"></script>
+    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
+    <link rel="stylesheet" href="css/jsoneditor.min.css">
+    <link rel="stylesheet" href="css/main.css">
 </head>
 <body class="testApp">
+
 <div class="container">
-    <div class="row">
-        <div class="col-6">
+    <h1>GDML demo</h1>
+</div>
+
+<div class="container-fluid h-100">
+    <div class="row h-100">
+        <div class="col-lg-3">
             <div class="card">
                 <div class="card-body">
                     <a>Load file:</a>
                     <input type="file" id="file_load_button" accept=".gdml, application/xml, application/json"/>
                 </div>
             </div>
-        </div>
-        <div class="col-6">
             <div class="card">
                 <div class="card-body" id="drop_zone">
                     Load data
@@ -29,23 +31,18 @@
                     (drag file here)
                 </div>
             </div>
+            <div class="overflow-auto" id="tree"></div>
         </div>
-    </div>
-</div>
-<div class="container">
-    <h1>GDML demo</h1>
-</div>
-
-<div class="container-fluid">
-    <div class="row">
-        <div class="col-lg-3" id="tree"></div>
         <div class="col-lg-6">
-            <div class="row" id="layers"></div>
-            <div class="row container" id="canvas"></div>
+            <div id="canvas"></div>
+        </div>
+        <div class="col-lg-3">
+            <div class="row" id="config"></div>
+            <div class="row" id="editor"></div>
         </div>
-        <div class="col-lg-3" id="editor"></div>
     </div>
 </div>
-
-</body>
+<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
+<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
+<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script></body>
 </html>
\ No newline at end of file