diff --git a/pytato/distributed/partition.py b/pytato/distributed/partition.py
index a59bd0e409f48eae1c3a090927a2a0301698da97..15f4f89ca1fa8c390cba5f9c0e2cec1e4d5546cc 100644
--- a/pytato/distributed/partition.py
+++ b/pytato/distributed/partition.py
@@ -249,7 +249,9 @@ class DistributedGraphPartition:
     .. attribute:: name_to_output
 
        Mapping of placeholder names to the respective :class:`pytato.array.Array`
-       they represent.
+       they represent. This is where the actual expressions are stored, for
+       all parts. Observe that the :class:`DistributedGraphPart`, for the most
+       part, only stores names.
     """
     parts: Mapping[PartId, DistributedGraphPart]
     name_to_output: Mapping[str, Array]