Compile again.

[tatoo.git] / src / pretty.ml

diff --git a/src/pretty.ml b/src/pretty.ml
index 02c413f..bd9d410 100644 (file)
--- a/src/pretty.ml
+++ b/src/pretty.ml
@@ -86,6 +86,7 @@ let up_arrow = "↑"
 let right_arrow = "→"
 let left_arrow =  "←"
 let epsilon = "ϵ"
+let big_sigma = "∑"
 let cap = "∩"
 let cup = "∪"
 let lnot = "¬"