From 209aa0fb7e492940c0136597222b191f1338c0b5 Mon Sep 17 00:00:00 2001
From: Greg Hendershott <greghendershott@gmail.com>
Date: Tue, 30 Oct 2012 14:21:27 -0400
Subject: [PATCH] Explain use of make-rename-transformer.

Progress on issue #1.
---
 main.rkt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/main.rkt b/main.rkt
index 4a4a60f..a72fd41 100644
--- a/main.rkt
+++ b/main.rkt
@@ -909,6 +909,10 @@ value:
 (aif #f (displayln it) (void))
 ]
 
+Inside the @racket[syntax-parameterize], @racket[it] acts as an alias
+for @racket[tmp]. The alias behavior is created by
+@racket[make-rename-transformer].
+
 If we try to use @racket[it] outside of an @racket[aif] form, and
 @racket[it] isn't otherwise defined, we get an error like we want: