diff --git a/runtime/syntax/python3.yaml b/runtime/syntax/python3.yaml
index 0afcd051a3..ba415a77f8 100644
--- a/runtime/syntax/python3.yaml
+++ b/runtime/syntax/python3.yaml
@@ -58,5 +58,5 @@ rules:
     - comment:
         start: "#"
         end: "$"
-        rules:
-            - todo: "(TODO|FIXME):?"
+        rules:  # AKA Code tags (PEP 350)
+            - todo: "(TODO|FIXME|HACK|BUG|NOTE|FAQ|MNEMONIC|REQ|RFE|IDEA|PORT|\?\?\?|!!!|GLOSS|SEE|TODOC|STAT|RVD|CRED):?"