diff --git a/notes-on-testing.md b/notes-on-testing.md
index 987aebe..fe18b9d 100644
--- a/notes-on-testing.md
+++ b/notes-on-testing.md
@@ -1,8 +1,10 @@
 - test Mailbox screens when user selects large font
-- test Mailbox screens on different screen types/sizes/ratios
+- test Mailbox screens on different screen types/sizes/ratios, portrait and landscape, all devices
 - according to the mattermost discussion of 13/14 dec, there may be variations of illustration size used on mailbox screens - normal, short and none... if that decision is made, then that will need to be tested too
 
-- discussion on the MM 20/12 - error handling.  Find out how to trigger each error response mentioned, to vrify that they are handled correctly.
+- discussion on the MM 20/12 - error handling.  Find out how to trigger each error response mentioned, to verify that they are handled correctly.
+
+[Maibox_coverage_matrix.ods](uploads/7f8c76226ccaf1c1cc21ba0e8476f3e8/Maibox_coverage_matrix.ods)