diff --git a/db/db_impl/db_impl.h b/db/db_impl/db_impl.h
index 772398947349..e0bb5eec936f 100644
--- a/db/db_impl/db_impl.h
+++ b/db/db_impl/db_impl.h
@@ -379,9 +379,7 @@ class DBImpl : public DB {
   void ReleaseSnapshot(const Snapshot* snapshot) override;
 
   // DO NOT USE, UNDER CONSTRUCTION
-  // Returns a cross-column-family iterator from a consistent database state.
-  // When the same key exists in more than one column families, this iterates in
-  // the order that column family is provided in column_families
+  // Return a cross-column-family iterator from a consistent database state.
   MultiCfIterator* NewMultiCfIterator(
       const ReadOptions& options,
       const std::vector<ColumnFamilyHandle*>& column_families,
diff --git a/include/rocksdb/db.h b/include/rocksdb/db.h
index f0a520a6400e..1db1093b5171 100644
--- a/include/rocksdb/db.h
+++ b/include/rocksdb/db.h
@@ -974,9 +974,10 @@ class DB {
 
   // DO NOT USE, UNDER CONSTRUCTION
   // Return a cross-column-family iterator from a consistent database state.
-  // When the same key exists in more than one column families, the iterator
+  // When the same key is present in multiple column families, the iterator
   // selects the value from the first column family containing the key, in the
-  // order provided in the `column_families` parameter.
+  // order specified by the `column_families` parameter. For wide column values,
+  // the iterator combines the columns into a single wide column value.
   virtual MultiCfIterator* NewMultiCfIterator(
       const ReadOptions& options,
       const std::vector<ColumnFamilyHandle*>& column_families,
diff --git a/include/rocksdb/multi_cf_iterator.h b/include/rocksdb/multi_cf_iterator.h
index 0b9ee622fca8..ddaf1a29f350 100644
--- a/include/rocksdb/multi_cf_iterator.h
+++ b/include/rocksdb/multi_cf_iterator.h
@@ -19,9 +19,10 @@ struct ReadOptions;
 
 // UNDER CONSTRUCTION - DO NOT USE
 // A cross-column-family iterator from a consistent database state.
-// When the same key exists in more than one column families, the iterator
+// When the same key is present in multiple column families, the iterator
 // selects the value from the first column family containing the key, in the
-// order provided in the `column_families` parameter.
+// order specified by the `column_families` parameter. For wide column values,
+// the iterator combines the columns into a single wide column value.
 class MultiCfIterator : public Iterator {
  public:
   MultiCfIterator() {}