From a1a1dbe2db7afb12c4a25a3a73b902112a4feab8 Mon Sep 17 00:00:00 2001
From: Danny Yoo <dyoo@cs.wpi.edu>
Date: Wed, 29 Jun 2011 17:34:12 -0400
Subject: [PATCH] more descriptions

---
 scribblings/manual.scrbl | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/scribblings/manual.scrbl b/scribblings/manual.scrbl
index a5bf048..25d82e0 100644
--- a/scribblings/manual.scrbl
+++ b/scribblings/manual.scrbl
@@ -397,9 +397,20 @@ language.
 
 The bindings here might relocate!
 
-@defform[(in-javascript-context? ...)]{}
-@defform[(viewport-width)]{}
-@defform[(viewport-height)]{}
+@defproc[(in-javascript-context?) boolean]{Returns true if the running context
+supports JavaScript-specific functions.}
+
+@defform[(viewport-width)]{
+Can only be called in a JavaScript context.
+
+Returns wthe width of the viewport.
+}
+
+@defform[(viewport-height)]{
+Can only be called in a JavaScript context.
+
+Returns the height of the viewport.
+}