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ALPACA by Chris Pressey

A Language for Programming Arbitrary Cellular Automata.  A metalanguage for describing any two-dimensional cellular automaton, from simple ones such as Life and WireWorld to more complex ones such as REDGREEN.

Apple Befunge by Chris Pressey

An adaptation of Befunge-93 for the Apple ][+, using a 40 × 24 program space.  Some of the instructions are represented by different characters for compatibility with the Apple ][+'s limited character set.