+## Difference between Classic and SW (switched) editions
+
+- **Classic** : Keeps all standard keys on US QWERTY and adds customizations to the `Right Alt (+Shift)` modifier.\
+[**-> Layout image of Classic edition**](https://pieter-degroote.github.io/UltimateKEYS/image-classic.html)
+
+- **SW (switched)** : Also adds customizations to the `Right Alt (+Shift)` modifier, but also makes the symbols !, @, #, $, %, ^, &, \*, ( and ) accessible without holding down Shift. The numbers have moved to Shift (as most computers have a separate numpad).\
+[**-> Layout image of SW edition**](https://pieter-degroote.github.io/UltimateKEYS/image-sw.html)
+
+## Script for AutoHotkey (Windows)
+
+The AutoHotkey scripts are highly customizable editions of UltimateKEYS. To work properly, the Windows keyboard has to be set to standard US QWERTY and at least AutoHotkey v1.1 (preferably as 'Unicode 64-bit', on 32-bit Windows as 'Unicode 32-bit') is required.
+
+- **AutoHotkey website : https://www.autohotkey.com/ / https://github.com/Lexikos/AutoHotkey_L/releases**