Name:		"Hacking Data Compression" course
 Author:	Andy McFadden
 Written:	October 1992 - July 1993
 Summary:	12-part course on data compression, with sample source code
		for the Apple IIgs
 Description:

 This is a 12-part course I did for the "Apple II University" on GEnie,
 back when GEnie was a major online service. This was written while
 I was working on HardPressed (and working full time as a software
 engineer... I was pretty busy).

 The ZIP file contains twelve SHK files, one per lesson.

 Lesson 1: Introduction
       Course overview and introduction to compression concepts.
 Lesson 2: Basics
       Discussion of RLE and differential coding.
 Lesson 3: Somewhat Clever Ad-Hoc Schemes
       Simple character encodings, MTF, digrams; intro to higher-order
       models.
 Lesson 4: Shannon, Fano, and Huffman
       Explanation of probability encoding.
 Lesson 5: Adaptive Encoding
       Adaptive vs static methods, Splay trees, adaptive Huffman.
 Lesson 6: Arithmetic Coding
       How arithmetic encoding works; includes the CACM sources and
       variations.
 Lesson 7: Ziv and Lempel
       Discussion of LZ77 and LZ78.
 Lesson 8: LZW
       Detailed explanation of the LZW algorithm.
 Lesson 9: NuFX and ShrinkIt
       Discussion about the compression used in ShrinkIt.
 Lesson 10: LZSS
       Detailed explanation of the LZSS algorithm.
 Lesson 11: LZH, LZARI, and LZB
       How to improve LZSS with Huffman, arithmetic, and unary coding.
 Lesson 12: HardPressed(tm)
       How to write compression modules for HardPressed.

 The lesson files are plain ASCII text.  The sample code is (usually) in
 both C and 65816 assembly.  The C code should work on most platforms,
 and the explanations of compression theory and the algorithms should
 apply no matter what platform you're on.