diff --git a/include/sample/ncbi_sample_api.hpp b/include/sample/ncbi_sample_api.hpp
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+#ifndef SAMPLE__NCBI_SAMPLE_API__HPP
+#define SAMPLE__NCBI_SAMPLE_API__HPP
+
+/*  $Id$
+ * ===========================================================================
+ *
+ *                            PUBLIC DOMAIN NOTICE
+ *               National Center for Biotechnology Information
+ *
+ *  This software/database is a "United States Government Work" under the
+ *  terms of the United States Copyright Act.  It was written as part of
+ *  the author's official duties as a United States Government employee and
+ *  thus cannot be copyrighted.  This software/database is freely available
+ *  to the public for use. The National Library of Medicine and the U.S.
+ *  Government have not placed any restriction on its use or reproduction.
+ *
+ *  Although all reasonable efforts have been taken to ensure the accuracy
+ *  and reliability of the software and data, the NLM and the U.S.
+ *  Government do not and cannot warrant the performance or results that
+ *  may be obtained by using this software or data. The NLM and the U.S.
+ *  Government disclaim all warranties, express or implied, including
+ *  warranties of performance, merchantability or fitness for any particular
+ *  purpose.
+ *
+ *  Please cite the author in any work or product based on this material.
+ *
+ * ===========================================================================
+ *
+ * Authors:  Denis Vakatov
+ *
+ */
+
+/// @file ncbi_sample_api.hpp
+/// CNcbiSample -- base class for the NCBI samples, to be used by
+/// the NEW_PROJECT-class utilities.
+
+#include <corelib/ncbistl.hpp>
+
+
+/** @addtogroup SampleAPI
+ *
+ * @{
+ */
+
+/// CNcbiSample -- base class for the NCBI samples, to be used
+/// by the NEW_PROJECT-class utilities.
+
+class CNcbiSample
+{
+public:
+    CNcbiSample() {}
+    virtual ~CNcbiSample() {}
+
+    virtual std::string Description(void) = 0;
+
+    virtual void Init(void) = 0;
+    virtual int  Run (void) = 0;
+    virtual void Exit(void) = 0;
+};
+
+
+/* @} */
+
+#endif // SAMPLE__NCBI_SAMPLE_API__HPP