1 files changed, 2 insertions, 1 deletions

diff --git a/spec.txt b/spec.txt
index 2f01257..f3921c6 100644
--- a/spec.txt
+++ b/spec.txt
@@ -9481,7 +9481,8 @@ just above `stack_bottom` (or the first element if `stack_bottom`
 is NULL).
 
 We keep track of the `openers_bottom` for each delimiter
-type (`*`, `_`).  Initialize this to `stack_bottom`.
+type (`*`, `_`) and delimiter length (modulo 3).  Initialize
+this to `stack_bottom`.
 
 Then we repeat the following until we run out of potential
 closers: