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diff --git a/src/graphcoloring/levels/globalloader.hpp b/src/graphcoloring/levels/globalloader.hpp
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+++ b/src/graphcoloring/levels/globalloader.hpp
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+////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2018 Leo Tenenbaum
+// This file is part of GraphColoring.
+//
+// GraphColoring is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// GraphColoring 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with GraphColoring.  If not, see <https://www.gnu.org/licenses/>.
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef GRAPHCOLORING_LEVELS_GLOBALLOADER_H_
+#define GRAPHCOLORING_LEVELS_GLOBALLOADER_H_
+
+#include "pugi/pugixml.hpp"
+
+namespace graphcoloring {
+
+class GlobalLoader {
+public:
+	GlobalLoader();
+	virtual ~GlobalLoader() {}
+	void LoadDocument(const pugi::xml_document& document);
+	bool IsVertexProtected(char protection) const;
+	bool IsEdgeProtected(char protection) const;
+private:
+	std::string vertex_protections;
+	std::string edge_protections;
+};
+
+} // namespace graphcoloring
+
+#endif // GRAPHCOLORING_LEVELS_GLOBALLOADER_H_