X-Git-Url: http://git.nguyen.vg/gitweb/?p=tatoo.git;a=blobdiff_plain;f=src%2Fpretty.ml;h=bd9d410f0609360255af1418a47411e725b81abc;hp=02c413f6950349bccb25cf79e86b29ec3b2e385e;hb=9b75e9a2074c357fc2c823156451209d2a4cef8b;hpb=447476621700590e7386283c6d2850d6cd9721c8

diff --git a/src/pretty.ml b/src/pretty.ml
index 02c413f..bd9d410 100644
--- 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 = "¬"