diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 0000000..3bb9159
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,20 @@
+# License
+
+## COPYRIGHT NOTICE
+
+This software, including all programs, computer files, and associated documentation, are Copyright (c) 2002, 2011, 2018, 2019 David C A Croft. All rights reserved.
+
+## DISCLAIMER
+
+This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
+
+## LICENSE
+
+Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+
+2. Altered versions must be plainly marked as such, and must not be misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any distribution.
+