diff --git a/visionforge-core/src/commonMain/kotlin/space/kscience/visionforge/useProperty.kt b/visionforge-core/src/commonMain/kotlin/space/kscience/visionforge/useProperty.kt
index 4d00f15b..87312f6f 100644
--- a/visionforge-core/src/commonMain/kotlin/space/kscience/visionforge/useProperty.kt
+++ b/visionforge-core/src/commonMain/kotlin/space/kscience/visionforge/useProperty.kt
@@ -13,20 +13,20 @@ import kotlin.reflect.KProperty1
 
 
 /**
- * Call [callBack] on initial value of the property and then on all subsequent values after change
+ * Call [callback] on initial value of the property and then on all subsequent values after change
  */
 public fun Vision.useProperty(
     propertyName: Name,
     inherit: Boolean? = null,
     includeStyles: Boolean? = null,
     scope: CoroutineScope? = manager?.context,
-    callBack: (Meta) -> Unit,
+    callback: (Meta) -> Unit,
 ): Job {
     //Pass initial value.
-    callBack(properties.getProperty(propertyName, inherit, includeStyles))
+    callback(properties.getProperty(propertyName, inherit, includeStyles))
     return properties.changes.onEach { name ->
         if (name.startsWith(propertyName)) {
-            callBack(properties.getProperty(propertyName, inherit, includeStyles))
+            callback(properties.getProperty(propertyName, inherit, includeStyles))
         }
     }.launchIn(scope ?: error("Orphan Vision can't observe properties"))
 }
@@ -36,19 +36,19 @@ public fun Vision.useProperty(
     inherit: Boolean? = null,
     includeStyles: Boolean? = null,
     scope: CoroutineScope? = manager?.context,
-    callBack: (Meta) -> Unit,
-): Job = useProperty(propertyName.parseAsName(), inherit, includeStyles, scope, callBack)
+    callback: (Meta) -> Unit,
+): Job = useProperty(propertyName.parseAsName(), inherit, includeStyles, scope, callback)
 
 public fun <V : Vision, T> V.useProperty(
     property: KProperty1<V, T>,
     scope: CoroutineScope? = manager?.context,
-    callBack: V.(T) -> Unit,
+    callback: V.(T) -> Unit,
 ): Job {
     //Pass initial value.
-    callBack(property.get(this))
+    callback(property.get(this))
     return properties.changes.onEach { name ->
         if (name.startsWith(property.name.asName())) {
-            callBack(property.get(this@useProperty))
+            callback(property.get(this@useProperty))
         }
     }.launchIn(scope ?: error("Orphan Vision can't observe properties"))
 }
\ No newline at end of file
diff --git a/visionforge-markdown/src/jsMain/kotlin/space/kscience/visionforge/markup/MarkupPlugin.kt b/visionforge-markdown/src/jsMain/kotlin/space/kscience/visionforge/markup/MarkupPlugin.kt
index e79908f0..aad66f3f 100644
--- a/visionforge-markdown/src/jsMain/kotlin/space/kscience/visionforge/markup/MarkupPlugin.kt
+++ b/visionforge-markdown/src/jsMain/kotlin/space/kscience/visionforge/markup/MarkupPlugin.kt
@@ -12,6 +12,7 @@ import space.kscience.dataforge.context.PluginFactory
 import space.kscience.dataforge.context.PluginTag
 import space.kscience.dataforge.meta.Meta
 import space.kscience.dataforge.names.Name
+import space.kscience.dataforge.names.asName
 import space.kscience.visionforge.*
 import space.kscience.visionforge.markup.VisionOfMarkup.Companion.COMMONMARK_FORMAT
 import space.kscience.visionforge.markup.VisionOfMarkup.Companion.GFM_FORMAT
@@ -44,8 +45,13 @@ public actual class MarkupPlugin : VisionPlugin(), ElementVisionRenderer {
         element.append(div)
     }
 
+    override fun content(target: String): Map<Name, Any> = when (target) {
+        ElementVisionRenderer.TYPE -> mapOf("markup".asName() to this)
+        else -> super.content(target)
+    }
+
     public actual companion object : PluginFactory<MarkupPlugin> {
-        override val tag: PluginTag = PluginTag("vision.markup", PluginTag.DATAFORGE_GROUP)
+        override val tag: PluginTag = PluginTag("vision.markup.js", PluginTag.DATAFORGE_GROUP)
 
         override fun build(context: Context, meta: Meta): MarkupPlugin  = MarkupPlugin()
 
diff --git a/visionforge-markdown/src/jvmMain/kotlin/space/kscience/visionforge/markup/MarkupPlugin.kt b/visionforge-markdown/src/jvmMain/kotlin/space/kscience/visionforge/markup/MarkupPlugin.kt
index b95c291f..ce094ee9 100644
--- a/visionforge-markdown/src/jvmMain/kotlin/space/kscience/visionforge/markup/MarkupPlugin.kt
+++ b/visionforge-markdown/src/jvmMain/kotlin/space/kscience/visionforge/markup/MarkupPlugin.kt
@@ -14,7 +14,7 @@ public actual class MarkupPlugin : VisionPlugin() {
     override val tag: PluginTag get() = Companion.tag
 
     public actual companion object : PluginFactory<MarkupPlugin> {
-        override val tag: PluginTag = PluginTag("vision.markup", PluginTag.DATAFORGE_GROUP)
+        override val tag: PluginTag = PluginTag("vision.markup.jvm", PluginTag.DATAFORGE_GROUP)
 
         override fun build(context: Context, meta: Meta): MarkupPlugin = MarkupPlugin()