diff --git a/build.gradle.kts b/build.gradle.kts
index 2dc7926a..5d7a7ec8 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -33,4 +33,8 @@ ksciencePublish {
 apiValidation {
     validationDisabled = true
     ignoredPackages.add("info.laht.threekt")
+}
+
+rootProject.plugins.withType(org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootPlugin::class.java) {
+    rootProject.the<org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootExtension>().versions.webpackDevServer.version = "4.0.0-rc.0"
 }
\ No newline at end of file
diff --git a/docs/uml/Vision.puml b/docs/uml/Vision.puml
index b7929c80..2b4d9953 100644
--- a/docs/uml/Vision.puml
+++ b/docs/uml/Vision.puml
@@ -7,23 +7,23 @@ interface Vision{
 }
 
 interface Solid{
-    val descriptor: MetaDescriptor
-    val parent: VisionGroup?
+    The base for 3D geometry
 }
 Vision <-- Solid
 
 class VisionGroup{
+    A group of Visions
+
     val children: Map<NameToken, Vision>
     val defaultTarget: String
+
     fun content(target): Map<Name, Any>
     fun get(name: Name): Vision?
 }
 Vision <-- VisionGroup
 
 class VisionBase{
-    var parent: VisionGroup?
-    var properties: MutableMeta?
-    fun getOrCreateProperties(): MutableMeta
+    basic vision implementation
 }
 Vision <-- VisionBase
 
@@ -110,7 +110,6 @@ MutableVisionGroup <-- VisionGroupBase
 class RootVisionGroup
 VisionGroupBase <-- RootVisionGroup
 
-
 class VisionOfPlotly{
      var properties: MutableMeta?
      val plot: Plot