From 266aa19c9f3712ba0b0b7001e0b137717f214259 Mon Sep 17 00:00:00 2001
From: Matthias Felleisen <matthias@racket-lang.org>
Date: Sat, 28 Apr 2007 23:04:33 +0000
Subject: [PATCH] world docs

svn: r6075
---
 collects/teachpack/htdp/Docs/world.thtml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/collects/teachpack/htdp/Docs/world.thtml b/collects/teachpack/htdp/Docs/world.thtml
index b01bbe6b30..7c3820c6c5 100644
--- a/collects/teachpack/htdp/Docs/world.thtml
+++ b/collects/teachpack/htdp/Docs/world.thtml
@@ -42,6 +42,11 @@ students to simulate a small world of animated drawings and games:
    makes it tick every n seconds, 
    and makes w the first world
 
+<li><code>{(idx big-bang)} : Nat Nat Number World Boolean -> true</code><br>
+  <code>big-bang</code> takes an optional fifth argument. If it is
+  <code>true</code>, the world allows the generation of images from the
+  animation, including an animated GIF image 
+
 <li><code>{(idx on-tick-event)} : (World -> World) -> true</code><br>
    <code>(on-tick-event tock)</code> means that DrScheme must call <code>tock</code>
    on the current world every time the clock ticks; it uses the result as the next world