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-GNU Aris is a sequential proof program, designed to assist anyone interested
-in solving logical proofs. Aris supports both propositional and predicate
-logic, as well as Boolean algebra and arithmetical logic in the form of
-abstract sequences. It uses a predefined set of both inference and equivalence
-rules, however gives the user options to use older proofs as lemmas, including
-Isabelle's Isar proofs.
+GNU Aris is a sequential proof program, designed to assist anyone
+interested in solving logical proofs. Aris supports both propositional
+and predicate logic, as well as Boolean algebra and arithmetical logic
+in the form of abstract sequences. It uses a predefined set of both
+inference and equivalence rules, however gives the user options to use
+older proofs as lemmas, including Isabelle's Isar proofs.