This is bsc, Block Sorting Compressor. Version 3.1.0. 8 July 2012.
Copyright (c) 2009-2012 Ilya Grebnov <Ilya.Grebnov@gmail.com>.

Usage: bsc <e|d> inputfile outputfile <options>

Block sorting options:
  -b<size> Block size in megabytes, default: -b25
             minimum: -b1, maximum: -b1024
  -m<algo> Block sorting algorithm, default: -m0
             -m0 Burrows Wheeler Transform (default)
             -m3..8 Sort Transform of order n
  -c<ctx>  Contexts for sorting, default: -cf
             -cf Following contexts (default)
             -cp Preceding contexts
             -ca Autodetect (experimental)
  -e<algo> Entropy encoding algorithm, default: -e1
             -e1 Static Quantized Local Frequency Coding (default)
             -e2 Adaptive Quantized Local Frequency Coding (best compression)

Preprocessing options:
  -p       Disable all preprocessing techniques
  -s       Enable segmentation (adaptive block size), default: disable
  -r       Enable structured data reordering, default: disable
  -l       Enable Lempel-Ziv preprocessing, default: enable
  -H<size> LZP dictionary size in bits, default: -H16
             minimum: -H10, maximum: -H28
  -M<size> LZP minimum match length, default: -M128
             minimum: -M4, maximum: -M255

Platform specific options:
  -G       Enable Sort Transform acceleration on NVIDIA GPU, default: disable
  -P       Enable large 2MB RAM pages, default: disable
  -t       Disable parallel blocks processing, default: enable
  -T       Disable multi-core systems support, default: enable

Options may be combined into one, like -b128p -m5e1