diff --git a/operational b/operational
index dab62b3149e694c1abe3d5a2b9017b2aed290203..b7a078ff97dd235765121b0f96aaf2d7f595e363 100644
--- a/operational
+++ b/operational
@@ -21,6 +21,8 @@ I already set this in ui file:
 
 They don't work properly in Wayland.
 
+- see minimal test application at ~/c/testing-only/do-not-focus/main.c
+
 * current                                                             :entry:
 ** 
 ** 2019-09-02 support user configuration of theme and panel orientation.