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diff --git a/utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/ExpID.java b/utils/PDDLtoSANetTranslator/PDDLParser/src/pddl4j/exp/ExpID.java
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+/*
+ * Copyright Dept. of Mathematics & Computer Science Univ. Paris-Descartes
+ *
+ * This software is governed by the CeCILL  license under French law and
+ * abiding by the rules of distribution of free software.  You can  use,
+ * modify and/ or redistribute the software under the terms of the CeCILL
+ * license as circulated by CEA, CNRS and INRIA at the following URL
+ * "http://www.cecill.info".
+ *
+ * As a counterpart to the access to the source code and  rights to copy,
+ * modify and redistribute granted by the license, users are provided only
+ * with a limited warranty  and the software's author,  the holder of the
+ * economic rights,  and the successive licensors  have only  limited
+ * liability.
+ *
+ * In this respect, the user's attention is drawn to the risks associated
+ * with loading,  using,  modifying and/or developing or reproducing the
+ * software by the user in light of its specific status of free software,
+ * that may mean  that it is complicated to manipulate,  and  that  also
+ * therefore means  that it is reserved for developers  and  experienced
+ * professionals having in-depth computer knowledge. Users are therefore
+ * encouraged to load and test the software's suitability as regards their
+ * requirements in conditions enabling the security of their systems and/or
+ * data to be ensured and,  more generally, to use and operate it in the
+ * same conditions as regards security.
+ *
+ * The fact that you are presently reading this means that you have had
+ * knowledge of the CeCILL license and that you accept its terms.
+ */
+
+package pddl4j.exp;
+
+/**
+ * This enumeration list all expression id used in the pddl language.
+ * 
+ * @author Damien Pellier
+ * @version 1.0 
+ */
+public enum ExpID {
+     /**
+     * The compared function expression id.
+     */
+    F_COMP,    
+    /**
+     * The assign operator expression id.
+     */
+    ASSIGN_OP,
+    /**
+     * The when expression id.
+     */
+    WHEN,
+    /**
+     * The and expression id.
+     */
+    AND,
+    /**
+     * The or expression id.
+     */
+    OR,
+    /**
+     * The imply expression id.
+     */
+    IMPLY,
+    /**
+     * The node expression id.
+     */
+    NOT,
+    /**
+     * The preference expression id.
+     */
+    PREFERENCE,
+    /**
+     * The existential expression id.
+     */
+    EXIST,
+    /**
+     * The universal expression id.
+     */
+    FORALL,
+    /**
+     * The atomic formula expression id.
+     */
+    ATOMIC_FORMULA,
+    /**
+     * The derived predicate expression id. 
+     */
+    DERIVED_PREDICATE, 
+    /**
+     * The term expression id.
+     */
+    TERM, 
+    /**
+     * The optimization expression id.
+     */
+    METRIC_EXP, 
+    /**
+     * The conditional expression id.
+     */
+    COND_EXP, 
+    /**
+     * The timed expression id.
+     */
+    TIMED_EXP, 
+    
+    /**
+     *  New--probabilistic
+     */
+    PROB_EXP,
+    
+}