1 files changed, 6 insertions, 1 deletions
diff --git a/Smurf.dcl b/Smurf.dcl
index 25ea30b..53ab797 100644
--- a/Smurf.dcl
+++ b/Smurf.dcl
@@ -10,6 +10,8 @@ from GenEq import generic gEq
 
 from Data.Maybe import ::Maybe
 
+from LaTeX import class toLaTeX
+
 :: Stm = Push String
        | Input | Output
        | Cat | Head | Tail | Quotify
@@ -30,7 +32,7 @@ from Data.Maybe import ::Maybe
             , output :: [String]
             }
 
-:: Transition = (-->) infix 1 (Program, [String], State) ([String], [String], State)
+:: Transition = (-->) infix 1 (Program, Stack, State) (Stack, Stack, State)
 :: DerivationTree :== [Transition]
 
 derive gEq Stm
@@ -48,6 +50,9 @@ instance zero ListIO
 instance toString Transition
 instance toString DerivationTree
 
+instance toLaTeX Transition
+instance toLaTeX DerivationTree
+
 step :: !Program State u:io u:(IO u:io) -> u:(Maybe (!Program, State), u:io)
 run :: !Program State io (IO io) -> (Maybe State, io)