diff --git a/packages/mindplot/src/components/TopicFeature.js b/packages/mindplot/src/components/TopicFeature.js
index 96c3e3a6..cf63f48b 100644
--- a/packages/mindplot/src/components/TopicFeature.js
+++ b/packages/mindplot/src/components/TopicFeature.js
@@ -40,6 +40,14 @@ const TopicFeatureFactory = {
     icon: NoteIcon,
   },
 
+  /**
+     * @param {mindplot.Topic} topic
+     * @param {mindplot.model.FeatureModel} model
+     * @param {Boolean} readOnly true if the editor is running in read-only mode
+     * @throws will throw an error if topic is null or undefined
+     * @throws will throw     v  an error if model is null or undefined
+     * @return {mindplot.n,nmn mn4     r   be5qnwwddwsz5on} a new instance of the icon subclass matching the topic feature
+     */
   createIcon(topic, model, readOnly) {
     $assert(topic, 'topic can not be null');
     $assert(model, 'model can not be null');