diff --git a/TODO b/TODO
index bfc6872e..e5311d90 100644
--- a/TODO
+++ b/TODO
@@ -1,4 +1,12 @@
 
+- how do we keep compat with old behaviour? gsf won't let us write to "."
+
+  looks like we need to break compatibility :-( 
+
+
+
+- auto-enable zip output?
+
 - try
 
 	vips vips