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diff --git a/src/decision/decision_mode.h b/src/decision/decision_mode.h
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+/*********************                                                        */
+/*! \file decision_mode.h
+ ** \verbatim
+ ** Original author: kshitij
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 prototype.
+ ** Copyright (c) 2009-2012  The Analysis of Computer Systems Group (ACSys)
+ ** Courant Institute of Mathematical Sciences
+ ** New York University
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief [[ Add one-line brief description here ]]
+ **
+ ** [[ Add lengthier description here ]]
+ ** \todo document this file
+ **/
+
+#include "cvc4_private.h"
+
+#ifndef __CVC4__SMT__DECISION_MODE_H
+#define __CVC4__SMT__DECISION_MODE_H
+
+#include <iostream>
+
+namespace CVC4 {
+namespace decision {
+
+/** Enumeration of decision strategies */
+enum DecisionMode {
+
+  /**
+   * Decision engine doesn't do anything. Use sat solver's internal
+   * heuristics
+   */
+  DECISION_STRATEGY_INTERNAL,
+
+  /**
+   * Use the justification heuristic
+   */
+  DECISION_STRATEGY_JUSTIFICATION,
+
+  /**
+   * Use may-relevancy.
+   */
+  DECISION_STRATEGY_RELEVANCY
+
+};/* enum DecisionMode */
+
+}/* CVC4::decision namespace */
+
+std::ostream& operator<<(std::ostream& out, decision::DecisionMode mode) CVC4_PUBLIC;
+
+}/* CVC4 namespace */
+
+#endif /* __CVC4__SMT__DECISION_MODE_H */