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diff --git a/fuzzylite/fl/imex/FllImporter.h b/fuzzylite/fl/imex/FllImporter.h
new file mode 100644
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+++ b/fuzzylite/fl/imex/FllImporter.h
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+/*
+ Author: Juan Rada-Vilela, Ph.D.
+ Copyright (C) 2010-2014 FuzzyLite Limited
+ All rights reserved
+
+ This file is part of fuzzylite.
+
+ fuzzylite is free software: you can redistribute it and/or modify it under
+ the terms of the GNU Lesser General Public License as published by the Free
+ Software Foundation, either version 3 of the License, or (at your option)
+ any later version.
+
+ fuzzylite is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
+ for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with fuzzylite.  If not, see <http://www.gnu.org/licenses/>.
+
+ fuzzylite™ is a trademark of FuzzyLite Limited.
+
+ */
+
+#ifndef FL_FLLIMPORTER_H
+#define FL_FLLIMPORTER_H
+
+#include "fl/imex/Importer.h"
+
+#include <utility>
+
+namespace fl {
+    class TNorm;
+    class SNorm;
+    class Term;
+    class Defuzzifier;
+
+    class FL_API FllImporter : public Importer {
+    protected:
+        std::string _separator;
+    public:
+        explicit FllImporter(const std::string& separator = "\n");
+        virtual ~FllImporter() FL_IOVERRIDE;
+        FL_DEFAULT_COPY_AND_MOVE(FllImporter)
+
+        virtual void setSeparator(const std::string& separator);
+        virtual std::string getSeparator() const;
+
+        virtual std::string name() const FL_IOVERRIDE;
+        virtual Engine* fromString(const std::string& fll) const FL_IOVERRIDE;
+
+        virtual FllImporter* clone() const FL_IOVERRIDE;
+
+    protected:
+        virtual void process(const std::string& tag, const std::string& block, Engine* engine) const;
+        virtual void processInputVariable(const std::string& block, Engine* engine) const;
+        virtual void processOutputVariable(const std::string& block, Engine* engine) const;
+        virtual void processRuleBlock(const std::string& block, Engine* engine) const;
+
+        virtual TNorm* parseTNorm(const std::string& name) const;
+        virtual SNorm* parseSNorm(const std::string& name) const;
+
+        virtual Term* parseTerm(const std::string& text, Engine* engine) const;
+
+        virtual Defuzzifier* parseDefuzzifier(const std::string& line) const;
+        virtual std::pair<scalar, scalar> parseRange(const std::string& line) const;
+        virtual bool parseBoolean(const std::string& boolean) const;
+
+        virtual std::pair<std::string, std::string> parseKeyValue(const std::string& text,
+                char separator = ':') const;
+        virtual std::string clean(const std::string& line) const;
+
+    };
+}
+
+#endif  /* FL_FLLIMPORTER_H */
+