From 4c701dd1ecd3e75b36562b9ea11f8ec66f38730b Mon Sep 17 00:00:00 2001
From: diemheych <100515426+diemheych@users.noreply.github.com>
Date: Mon, 2 Oct 2023 14:28:06 +1100
Subject: [PATCH] Update README.md

---
 README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/README.md b/README.md
index 1c5c105..aa77e61 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@ Features include:
 Example FORTH files included for N-Queens and a simple graphical game, Snake.
 
 See a demonstration at: https://www.youtube.com/watch?v=ILMbia3-VZo
+
+Based on: https://www.openbookproject.net/py4fun/forth/forth.html
 # Installation
 Use the HP Connectivity Kit to transfer FORTH.hpprgm to a virtual or physical HP Prime calculator.