--- a/includes/constants.php	Mon Jun 30 17:22:29 2008 -0400
+++ b/includes/constants.php	Wed Jul 02 19:36:44 2008 -0400
@@ -76,6 +76,13 @@
 define('IMAGE_TYPE_GIF', 2);
 define('IMAGE_TYPE_JPG', 3);
 
+// token types
+define('TOKEN_VARIABLE', 1);
+define('TOKEN_BOOLOP', 2);
+define('TOKEN_PARENTHLEFT', 3);
+define('TOKEN_PARENTHRIGHT', 4);
+define('TOKEN_NOT', 5);
+
 //
 // User types - don't touch these
 //