Work on responsive CSS.

doc/site/functions.markdown

@@ -93,7 +93,7 @@ It's an error to call a function with fewer or more arguments than its parameter
 
 ## Returning values
 
-Function bodies return values just like methods. If the body is a single expression—more precisely if there is no newline after the `{` or parameter list—then the function implicitly returns the value of the expression.
+The body of a function is a [block](syntax.html#blocks). If it is a single expression—more precisely if there is no newline after the `{` or parameter list—then the function implicitly returns the value of the expression.
 
 Otherwise, the body returns `null` by default. You can explicitly return a value using a `return` statement. In other words, these two functions do the same thing:
 
@@ -104,8 +104,6 @@ Otherwise, the body returns `null` by default. You can explicitly return a value
       return "return value"
     }
 
-**TODO: Non-local returns?**
-
 ## Closures
 
 As you expect, functions are closures: they can access variables defined outside of their scope. They will hold onto closed-over variables even after leaving the scope where the function is defined: