--- a/Parser.st	Fri Sep 23 07:02:18 2016 +0200
+++ b/Parser.st	Sat Sep 24 06:43:04 2016 +0200
@@ -303,7 +303,7 @@
                                                 as instances of ImmutableArray,
                                                 which cannot be stored into.
                                                 Default is false, for compatibility.
-                                                Can be turned on while developping
+                                                Can be turned on while developing
                                                 new code to make certain that side
                                                 effects are avoided.