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A detailed reference manual for the RITA system, a set of computer programs which enable a user to develop "user agents" to perform such tasks as providing a simple interface to remote data systems. The system makes available a language for writing rules describing those agents' behavior and an operating environment in which the rules are interpreted. It also provides some heuristic modeling capability. The report describes the RITA concepts, keywords, and commands. A complete syntax chart for the system, with tables of reserved words and built-in functions, is also included, along with an illustrative example of a RITA rule set.

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