diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 7ab50f86..0e0bd247 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -7,6 +7,7 @@ include_directories (${CMAKE_SOURCE_DIR}
 
 set (timew_SRCS Database.cpp   Database.h
                 Datafile.cpp   Datafile.h
+                Exclusion.cpp  Exclusion.h
                 Extensions.cpp Extensions.h
                 Grammar.cpp    Grammar.h
                 Interval.cpp   Interval.h
diff --git a/src/Exclusion.cpp b/src/Exclusion.cpp
new file mode 100644
index 00000000..40a2cec8
--- /dev/null
+++ b/src/Exclusion.cpp
@@ -0,0 +1,37 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2015 - 2016, Paul Beckingham, Federico Hernandez.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// http://www.opensource.org/licenses/mit-license.php
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#include <cmake.h>
+#include <Exclusion.h>
+
+////////////////////////////////////////////////////////////////////////////////
+// Syntax:
+//   'exc' ?
+void Exclusion::initialize (const std::string& line)
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
diff --git a/src/Exclusion.h b/src/Exclusion.h
new file mode 100644
index 00000000..44e2dbee
--- /dev/null
+++ b/src/Exclusion.h
@@ -0,0 +1,41 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2015 - 2016, Paul Beckingham, Federico Hernandez.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+//
+// http://www.opensource.org/licenses/mit-license.php
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef INCLUDED_EXCLUSION
+#define INCLUDED_EXCLUSION
+
+#include <string>
+
+class Exclusion
+{
+public:
+  Exclusion () = default;
+  void initialize (const std::string&);
+
+private:
+};
+
+#endif