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This tool intended to help the graph rewriting process of Haskell expressions. This is the initial/experimental version. Usage: ./rewrite <Haskell source file> - The program reads the source, which can contain only simple function definitions. The following definitions may be used: (++), div, mod, eqInt, not, Cons, Nil, succ, True, False, sin. - The source is converted into a graph rewrite system. - The program opens a window. Press space to see the right-hand-sides of the graph rewrite rules. Short term plans (this version is expected at the end of May): - Allow data declarations. - Allow more built-in functions. Future plans: - Allow type classes. - Allow module imports. - Allow partial applications and slices. - Better handling of higher order functions. - Pattern parsing improvements. - Read the Prelude. - Extend to work with any Haskell 98 source file. - Control the graph rewrite process (control over which functions are atomic). - Control the visualization of the graph (some parts will be folded).