diff --git a/wayang-api/wayang-api-scala-java/src/main/scala/org/apache/wayang/api/DataQuanta.scala b/wayang-api/wayang-api-scala-java/src/main/scala/org/apache/wayang/api/DataQuanta.scala
index 2a2f60cc0..e6a125257 100644
--- a/wayang-api/wayang-api-scala-java/src/main/scala/org/apache/wayang/api/DataQuanta.scala
+++ b/wayang-api/wayang-api-scala-java/src/main/scala/org/apache/wayang/api/DataQuanta.scala
@@ -1307,8 +1307,12 @@ class JoinedDataQuanta[Out0: ClassTag, Out1: ClassTag]
 }
 
 /**
- * TODO: add the documentation to the object org.apache.wayang.api.DataQuanta
- * labels: documentation,todo
+ * Companion object for [[DataQuanta]].
+ *
+ * Provides factory methods to create [[DataQuanta]] instances directly
+ * from [[OutputSlot]]s. This is particularly useful when integrating
+ * custom operators into a [[WayangPlan]], including the DataFrame API
+ * where DataQuanta[Row] forms the foundation of tabular data processing.
  */
 object DataQuanta {