README.1ST

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                    The Ultimate Packer for eXecutables
   Copyright (c) 1996-2016 Markus Oberhumer, Laszlo Molnar & John Reiser
                           https://upx.github.io


MAJOR NEWS IN UPX 3
===================

The main news since UPX 2 are:

  * new format: added support for linux elf/arm

  * better compression using the LZMA algorithm (option '--lzma')

  * better support for MacOS