diff --git a/template.tlv b/template.tlv
index df84335..41cdc49 100644
--- a/template.tlv
+++ b/template.tlv
@@ -66,6 +66,8 @@
     >debugy = 5
 - __teliva_timestamp: original
   dbg:
+    >-- helper for debug by print; overlay debug information towards the right
+    >-- reset debugy within refresh when using this
     >function dbg(window, s)
     >  local oldy = 0
     >  local oldx = 0
diff --git a/toot-toot.tlv b/toot-toot.tlv
index 8b2f070..26eb591 100644
--- a/toot-toot.tlv
+++ b/toot-toot.tlv
@@ -66,6 +66,8 @@
     >debugy = 5
 - __teliva_timestamp: original
   dbg:
+    >-- helper for debug by print; overlay debug information towards the right
+    >-- reset debugy within refresh when using this
     >function dbg(window, s)
     >  local oldy = 0
     >  local oldx = 0