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diff --git a/src/main/java/org/pdfbox/util/operator/GRestore.java b/src/main/java/org/pdfbox/util/operator/GRestore.java
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+/**
+ * Copyright (c) 2004, www.pdfbox.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of pdfbox; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://www.pdfbox.org
+ *
+ */
+package org.pdfbox.util.operator;
+
+import org.apache.log4j.Logger;
+import java.util.List;
+
+import org.pdfbox.pdmodel.graphics.PDGraphicsState;
+import org.pdfbox.util.PDFOperator;
+
+/**
+ *
+ * <p>Titre : PDFEngine Modification.</p>
+ * <p>Description : Structal modification of the PDFEngine class : the long sequence of 
+ *    conditions in processOperator is remplaced by this strategy pattern</p>
+ * <p>Copyright : Copyright (c) 2004</p>
+ * <p>Société : DBGS</p>
+ * @author Huault : huault@free.fr
+ * @version $Revision: 1.3 $
+ */
+public class GRestore extends OperatorProcessor 
+{
+    private static final Logger LOG = Logger.getLogger(GRestore.class);
+
+
+    /**
+     * process : Q : Restore graphics state.
+     * @param operator The operator that is being executed.
+     * @param arguments List
+     */
+    public void process(PDFOperator operator, List arguments) 
+    {
+        if( LOG.isDebugEnabled() )
+        {
+            LOG.debug("<Q> - restore state" + this.toString());
+        }
+        context.setGraphicsState( (PDGraphicsState)context.getGraphicsStack().pop() );
+    }
+}