1 files changed, 2 insertions, 0 deletions
diff --git a/eqn/TODO b/eqn/TODO
index 7d0deb54c..89b158e8a 100644
--- a/eqn/TODO
+++ b/eqn/TODO
@@ -37,3 +37,5 @@ Vphantom
 Smash.
 
 Provide a variant of vec that extends over the length of the accentee.
+
+Support vertical arrow delimiters.