add comment about 2.2 compatibility
dump empty TODO comment
diff --git a/Modules/_csv.c b/Modules/_csv.c
index 7a3bfc4..e62999f 100644
--- a/Modules/_csv.c
+++ b/Modules/_csv.c
@@ -1,9 +1,21 @@
-/* TODO:
+/* csv module */
+
+/*
+
+This module provides the low-level underpinnings of a CSV reading/writing
+module. Users should not use this module directly, but import the csv.py
+module instead.
+
+**** For people modifying this code, please note that as of this writing
+**** (2003-03-23), it is intended that this code should work with Python
+**** 2.2.
+
*/
#include "Python.h"
#include "structmember.h"
+
/* begin 2.2 compatibility macros */
#ifndef PyDoc_STRVAR
/* Define macros for inline documentation. */