array-indexing.md

@@ -44,17 +44,17 @@ This doesn't even require any new syntax, because `.#` is a valid infix operator
 A more useful definition of '!' would be
 
 
-
+```wiki
 f ! x = x `seq` f x
-
+```
 
 
 where '!' has the exact same fixity as function application. so 
 
 
-
+```wiki
 foo !x !y
-
+```
 
 
 could be used to call foo with x and y evaluated strictly beforehand.