From 404ee401602ca741a73d6ac9de4da7d85278f80c Mon Sep 17 00:00:00 2001
From: Devine Lu Linvega <aliceffekt@gmail.com>
Date: Thu, 17 Nov 2016 13:19:32 -0800
Subject: [PATCH] Fied issue with the guide's hint message.

---
 README.md                  | 8 +++++++-
 scripts/modules/overlay.js | 1 +
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index b56edd5..74c396b 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,13 @@ $ !                               ; Clear temporary storage
 45'                               ; degree:   45/365
 rate:10                           ; variable: rate = 10
 "foo"                             ; string:   foo
-{40w}                             ; dynamic:  120px, 40% canvas width
+{40w}                             ; constant: 120px, 40% canvas width
+```
+
+#Constants
+```
+w                                 ; percentage of canvas width
+h                                 ; percentage of canvas height
 ```
 
 #Presets
diff --git a/scripts/modules/overlay.js b/scripts/modules/overlay.js
index f3f02f4..91ce5d2 100644
--- a/scripts/modules/overlay.js
+++ b/scripts/modules/overlay.js
@@ -2,6 +2,7 @@ function Overlay(element)
 {
   Module.call(this);
   
+  this.parameters = [Position,Rect];
   this.element = element;
   
   // Module