diff --git a/mezcla/TODO.md b/mezcla/TODO.md
index 4e834463..4065ef5d 100644
--- a/mezcla/TODO.md
+++ b/mezcla/TODO.md
@@ -3,5 +3,5 @@
 An optional priority is indicated by [Pn]
 
 - [P2] Straighten out `TEMP_BASE` and `TEMP_FILE` usages.
-
-
+- [P3] Add way to convert EX-comments into doctests for use with other tools.
+  See https://docs.pytest.org/en/7.1.x/how-to/doctest.html