diff --git a/example.jl b/example.jl
index 32fe00a..f211604 100644
--- a/example.jl
+++ b/example.jl
@@ -3,6 +3,9 @@ defop 2 Left (a ++ b)
 
 deftype Foo (A -> B)
 
+;; here is a comment
+; here is another comment
+
 deftype (Foo a b)
   (a -> b)
 
diff --git a/prelude.jl b/prelude.jl
new file mode 100644
index 0000000..bd1a296
--- /dev/null
+++ b/prelude.jl
@@ -0,0 +1,9 @@
+;; This file declares the various types used by intrinsic/prelude definitions
+;; It is sort of special in that it doesn't care whether there are any associated definitions
+;; just that there are type definitions for that particular binding's name
+
+deftype String (List Char)
+
+deftype (List a)
+  (Empty |
+   (Cons a (List a)))
diff --git a/representation.js b/representation.js
index 2b83669..9db580d 100644
--- a/representation.js
+++ b/representation.js
@@ -391,7 +391,8 @@ OPInfo = {"+" : [3, "Left"],
           "<$>" : [1, "Left"],
           "." : [1, "Left"],
           "," : [1, "Left"],
-          "->" : [1, "Right"]};
+          "->" : [1, "Right"],
+          "|" : [1, "Left"]};
 
 module.exports =
    {
diff --git a/tokenize.js b/tokenize.js
index 56de382..907622e 100755
--- a/tokenize.js
+++ b/tokenize.js
@@ -178,15 +178,21 @@ function peek(tokstream, toktype, word, charnum, linenum) {
   return false;
 }
 
+
 function tokenize(tokstream, matchop) {
   var tokens = [];
   var charnum = 1;
   var linenum = 1;
-  var i, result, lambda, num;
+  var i, result, lambda, num, comment;
 
   while (tokstream) {
     switch (tokstream[0].charCodeAt()) {
       /* falls through */
+      case 59: // ;
+        while (tokstream[0].charCodeAt() !== 10) {
+          tokstream = tokstream.substr(1);
+        }
+        break;
       case 9: // '\t'
         charnum++;
         tokens.push(["whitespace", '\t', charnum, linenum]);
@@ -216,6 +222,7 @@ function tokenize(tokstream, matchop) {
         charnum++;
         tokens.push(["left_paren", '(', charnum, linenum]);
         tokstream = tokstream.substr(1);
+
         break;
       /* falls through */
       case 41: // ')'