adding a sentence about parentheses wrapping.

documentation/index.html.erb

@@ -332,7 +332,8 @@ coffee --print app/scripts/*.coffee > concatenation.js</pre>
 
     <p>
       You don't need to use parentheses to invoke a function if you're passing
-      arguments:<br /><tt>print "coffee"</tt>
+      arguments:<br /><tt>print "coffee"</tt>. Implicit parentheses wrap forwards
+      to the end of the line, or block expression.
     </p>
 
     <p>