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+# LUFA library header files
+
+This directory contains some header files from [LUFA, the Lightweight USB Framework for AVRs](http://www.fourwalledcubicle.com/LUFA.php).
+
+LUFA is an extremely well designed library that exposes a beautiful and intuitive API that is a joy to work with. LUFA being an AVR-based library can't be used as a whole for ARM, but some parts of it can be.
+
+The selected header files contain macros for USB scancodes and USB HID report items. USB HID report item macros are especially helpful and it's a much better idea to use them than a bunch of magic numbers backed by loads of comments.