address comments
diff --git a/tensorflow/c/experimental/stream_executor/stream_executor_internal.h b/tensorflow/c/experimental/stream_executor/stream_executor_internal.h
index 52ae4ba..b202c8f 100644
--- a/tensorflow/c/experimental/stream_executor/stream_executor_internal.h
+++ b/tensorflow/c/experimental/stream_executor/stream_executor_internal.h
@@ -37,6 +37,9 @@
 // testing).
 port::Status InitStreamExecutorPlugin(SEInitPluginFn init_fn);
 
+// This file implements core stream executor base classes in terms of
+// the C API defined in stream_executor.h. A class "CSomething" represents a
+// "Something" that can be manipulated via calls in the C interface.
 class CPlatform : public Platform {
  public:
   explicit CPlatform(SP_Platform platform,