diff --git a/build.gradle.kts b/build.gradle.kts
index 0378807d..c1218820 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -26,7 +26,7 @@ allprojects {
     }
 
     group = "hep.dataforge"
-    version = "0.1.0-dev"
+    version = "0.1.1-dev"
 }
 
 subprojects{
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualGroup.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualGroup.kt
index 889cb0dc..a0af25b7 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualGroup.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualGroup.kt
@@ -1,7 +1,10 @@
 package hep.dataforge.vis.common
 
 import hep.dataforge.meta.MetaItem
-import hep.dataforge.names.*
+import hep.dataforge.names.Name
+import hep.dataforge.names.NameToken
+import hep.dataforge.names.asName
+import hep.dataforge.names.isEmpty
 import kotlinx.serialization.Transient
 
 
@@ -76,7 +79,7 @@ abstract class AbstractVisualGroup : AbstractVisualObject(), MutableVisualGroup
      * Add named or unnamed child to the group. If key is null the child is considered unnamed. Both key and value are not
      * allowed to be null in the same time. If name is present and [child] is null, the appropriate element is removed.
      */
-    override fun set(name: Name, child: VisualObject?) {
+    override fun set(name: Name, child: VisualObject?): Unit {
         when {
             name.isEmpty() -> {
                 if (child != null) {
@@ -100,13 +103,4 @@ abstract class AbstractVisualGroup : AbstractVisualObject(), MutableVisualGroup
         structureChangeListeners.forEach { it.callback(name, child) }
     }
 
-    operator fun set(key: String, child: VisualObject?): Unit {
-        if (key.isBlank()) {
-            if(child!= null) {
-                addStatic(child)
-            }
-        } else {
-            set(key.toName(), child)
-        }
-    }
 }
\ No newline at end of file
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualObject.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualObject.kt
index 7701eb1c..5487a304 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualObject.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualObject.kt
@@ -73,6 +73,9 @@ abstract class AbstractVisualObject : VisualObject {
             styleCache = it
         }
 
+    /**
+     * All available properties in a layered form
+     */
     override fun allProperties(): Laminate = Laminate(properties, mergedStyles)
 
     override fun getProperty(name: Name, inherit: Boolean): MetaItem<*>? {
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualGroup.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualGroup.kt
index 0a90adff..7108209e 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualGroup.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualGroup.kt
@@ -53,7 +53,7 @@ interface VisualGroup : Provider, Iterable<VisualObject>, VisualObject {
      */
     fun attachChildren() {
         styleSheet?.owner = this
-        this.children.values.forEach {
+        children.values.forEach {
             it.parent = this
             (it as? VisualGroup)?.attachChildren()
         }
@@ -90,4 +90,8 @@ interface MutableVisualGroup : VisualGroup {
 
 operator fun VisualGroup.get(str: String?) = get(str?.toName() ?: Name.EMPTY)
 
+operator fun MutableVisualGroup.set(key: String, child: VisualObject?) {
+    set(key.toName(), child)
+}
+
 fun MutableVisualGroup.removeAll() = children.keys.map { it.asName() }.forEach { this[it] = null }
\ No newline at end of file
diff --git a/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/visualGDML.kt b/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/visualGDML.kt
index 26e1ef98..97594bd0 100644
--- a/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/visualGDML.kt
+++ b/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/visualGDML.kt
@@ -5,6 +5,7 @@ import hep.dataforge.names.Name
 import hep.dataforge.names.asName
 import hep.dataforge.names.plus
 import hep.dataforge.vis.common.get
+import hep.dataforge.vis.common.set
 import hep.dataforge.vis.spatial.*
 import hep.dataforge.vis.spatial.World.ONE
 import hep.dataforge.vis.spatial.World.ZERO
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Box.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Box.kt
index fd6358a2..438fe2f0 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Box.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Box.kt
@@ -10,6 +10,7 @@ import hep.dataforge.meta.get
 import hep.dataforge.vis.common.AbstractVisualObject
 import hep.dataforge.vis.common.VisualFactory
 import hep.dataforge.vis.common.VisualObject
+import hep.dataforge.vis.common.set
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Composite.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Composite.kt
index ed6f087b..a1f5df12 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Composite.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Composite.kt
@@ -6,6 +6,7 @@ import hep.dataforge.io.serialization.ConfigSerializer
 import hep.dataforge.meta.Config
 import hep.dataforge.meta.update
 import hep.dataforge.vis.common.AbstractVisualObject
+import hep.dataforge.vis.common.set
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
 
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/ConeSegment.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/ConeSegment.kt
index 86abbe61..9d1c94d7 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/ConeSegment.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/ConeSegment.kt
@@ -5,6 +5,7 @@ package hep.dataforge.vis.spatial
 import hep.dataforge.io.serialization.ConfigSerializer
 import hep.dataforge.meta.Config
 import hep.dataforge.vis.common.AbstractVisualObject
+import hep.dataforge.vis.common.set
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
 import kotlin.math.cos
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Convex.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Convex.kt
index 1ca46886..eac4d39f 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Convex.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Convex.kt
@@ -5,6 +5,7 @@ package hep.dataforge.vis.spatial
 import hep.dataforge.io.serialization.ConfigSerializer
 import hep.dataforge.meta.Config
 import hep.dataforge.vis.common.AbstractVisualObject
+import hep.dataforge.vis.common.set
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
 
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Extruded.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Extruded.kt
index 18dac3d0..54577af6 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Extruded.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Extruded.kt
@@ -4,6 +4,7 @@ package hep.dataforge.vis.spatial
 import hep.dataforge.io.serialization.ConfigSerializer
 import hep.dataforge.meta.Config
 import hep.dataforge.vis.common.AbstractVisualObject
+import hep.dataforge.vis.common.set
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
 import kotlin.math.PI
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Label3D.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Label3D.kt
index 01ff005e..97ac5adf 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Label3D.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Label3D.kt
@@ -5,6 +5,7 @@ package hep.dataforge.vis.spatial
 import hep.dataforge.io.serialization.ConfigSerializer
 import hep.dataforge.meta.Config
 import hep.dataforge.vis.common.AbstractVisualObject
+import hep.dataforge.vis.common.set
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
 
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/PolyLine.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/PolyLine.kt
index eb850165..d028c81e 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/PolyLine.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/PolyLine.kt
@@ -8,6 +8,7 @@ import hep.dataforge.meta.number
 import hep.dataforge.names.asName
 import hep.dataforge.names.plus
 import hep.dataforge.vis.common.AbstractVisualObject
+import hep.dataforge.vis.common.set
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
 
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt
index 62d7b5c0..f56437b2 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt
@@ -79,6 +79,10 @@ class Proxy(val templateName: Name) : AbstractVisualObject(), VisualGroup, Visua
 
     override fun allProperties(): Laminate = Laminate(properties, mergedStyles, prototype.allProperties())
 
+    override fun attachChildren() {
+        //do nothing
+    }
+
     //override fun findAllStyles(): Laminate = Laminate((styles + prototype.styles).mapNotNull { findStyle(it) })
 
     @Serializable
@@ -125,6 +129,9 @@ class Proxy(val templateName: Name) : AbstractVisualObject(), VisualGroup, Visua
             }
         }
 
+        override fun attachChildren() {
+            //do nothing
+        }
 
         override fun allProperties(): Laminate = Laminate(properties, mergedStyles, prototype.allProperties())
 
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Sphere.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Sphere.kt
index 58e2c8b6..43c2cdb2 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Sphere.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Sphere.kt
@@ -5,6 +5,7 @@ package hep.dataforge.vis.spatial
 import hep.dataforge.io.serialization.ConfigSerializer
 import hep.dataforge.meta.Config
 import hep.dataforge.vis.common.AbstractVisualObject
+import hep.dataforge.vis.common.set
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
 import kotlin.math.PI
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Tube.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Tube.kt
index 248fbfce..c3b8f113 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Tube.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Tube.kt
@@ -4,6 +4,7 @@ package hep.dataforge.vis.spatial
 import hep.dataforge.io.serialization.ConfigSerializer
 import hep.dataforge.meta.Config
 import hep.dataforge.vis.common.AbstractVisualObject
+import hep.dataforge.vis.common.set
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
 import kotlin.math.PI
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualGroup3D.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualGroup3D.kt
index 83a089a8..1cb85e23 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualGroup3D.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualGroup3D.kt
@@ -19,6 +19,8 @@ import hep.dataforge.names.isEmpty
 import hep.dataforge.vis.common.AbstractVisualGroup
 import hep.dataforge.vis.common.StyleSheet
 import hep.dataforge.vis.common.VisualObject
+import hep.dataforge.vis.common.set
+import hep.dataforge.vis.spatial.VisualGroup3D.Companion.PROTOTYPES_KEY
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.UseSerializers
@@ -30,15 +32,6 @@ import kotlin.collections.set
 @Serializable
 @SerialName("group.3d")
 class VisualGroup3D : AbstractVisualGroup(), VisualObject3D {
-    /**
-     * A container for templates visible inside this group
-     */
-    @SerialName(PROTOTYPES_KEY)
-    var prototypes: VisualGroup3D? = null
-        set(value) {
-            value?.parent = this
-            field = value
-        }
 
     override var styleSheet: StyleSheet? = null
         private set
@@ -52,7 +45,7 @@ class VisualGroup3D : AbstractVisualGroup(), VisualObject3D {
 
     @SerialName("children")
     private val _children = HashMap<NameToken, VisualObject>()
-    override val children: Map<NameToken, VisualObject> get() = _children
+    override val children: Map<NameToken, VisualObject> get() = _children.filterKeys { it != PROTOTYPES_KEY }
 
 //    init {
 //        //Do after deserialization
@@ -111,13 +104,22 @@ class VisualGroup3D : AbstractVisualGroup(), VisualObject3D {
     }
 
     companion object {
-        const val PROTOTYPES_KEY = "templates"
+        val PROTOTYPES_KEY = NameToken("@prototypes")
 
         fun fromJson(json: String): VisualGroup3D =
-            Visual3DPlugin.json.parse(serializer(),json).also { it.attachChildren() }
+            Visual3DPlugin.json.parse(serializer(), json).also { it.attachChildren() }
     }
 }
 
+/**
+ * A container for templates visible inside this group
+ */
+var VisualGroup3D.prototypes: VisualGroup3D?
+    get() = children[PROTOTYPES_KEY] as? VisualGroup3D
+    set(value) {
+        this[PROTOTYPES_KEY.asName()] = value
+    }
+
 /**
  * Ger a prototype redirecting the request to the parent if prototype is not found
  */
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/UnRef.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/UnRef.kt
index 12681b24..c96be89c 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/UnRef.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/UnRef.kt
@@ -6,6 +6,7 @@ import hep.dataforge.vis.common.MutableVisualGroup
 import hep.dataforge.vis.common.VisualGroup
 import hep.dataforge.vis.spatial.Proxy
 import hep.dataforge.vis.spatial.VisualGroup3D
+import hep.dataforge.vis.spatial.prototypes
 
 object UnRef : VisualTreeTransform<VisualGroup3D>() {
     private fun VisualGroup.countRefs(): Map<Name, Int> {
diff --git a/demo/spatial-showcase/src/jsMain/kotlin/hep/dataforge/vis/spatial/demo/VariableBox.kt b/demo/spatial-showcase/src/jsMain/kotlin/hep/dataforge/vis/spatial/demo/VariableBox.kt
index 20540777..63e6c975 100644
--- a/demo/spatial-showcase/src/jsMain/kotlin/hep/dataforge/vis/spatial/demo/VariableBox.kt
+++ b/demo/spatial-showcase/src/jsMain/kotlin/hep/dataforge/vis/spatial/demo/VariableBox.kt
@@ -7,6 +7,7 @@ import hep.dataforge.meta.number
 import hep.dataforge.names.plus
 import hep.dataforge.names.startsWith
 import hep.dataforge.vis.common.getProperty
+import hep.dataforge.vis.common.set
 import hep.dataforge.vis.common.setProperty
 import hep.dataforge.vis.spatial.*
 import hep.dataforge.vis.spatial.VisualObject3D.Companion.GEOMETRY_KEY