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diff --git a/Source/cmSubdirCommand.h b/Source/cmSubdirCommand.h
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+++ b/Source/cmSubdirCommand.h
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+/*=========================================================================
+
+  Program:   Insight Segmentation & Registration Toolkit
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+
+  Copyright (c) 2000 National Library of Medicine
+  All rights reserved.
+
+  See COPYRIGHT.txt for copyright details.
+
+=========================================================================*/
+#ifndef cmSubdirCommand_h
+#define cmSubdirCommand_h
+
+#include "cmStandardIncludes.h"
+#include "cmCommand.h"
+
+/** \class cmSubdirCommand
+ * \brief Specify a list of subdirectories to build.
+ *
+ * cmSubdirCommand specifies a list of subdirectories to process
+ * by CMake. For each subdirectory listed, CMake will descend
+ * into that subdirectory and process any CMakeLists.txt found.
+ */
+class cmSubdirCommand : public cmCommand
+{
+public:
+  /**
+   * This is a virtual constructor for the command.
+   */
+  virtual cmCommand* Clone() 
+    {
+    return new cmSubdirCommand;
+    }
+
+  /**
+   * This is called when the command is first encountered in
+   * the CMakeLists.txt file.
+   */
+  virtual bool Invoke(std::vector<std::string>& args);
+
+  /**
+   * The name of the command as specified in CMakeList.txt.
+   */
+  virtual const char* GetName() { return "SUBDIRS";}
+
+  /**
+   * Succinct documentation.
+   */
+  virtual const char* GetTerseDocumentation() 
+    {
+    return "Add a list of subdirectories to the build.";
+    }
+  
+  /**
+   * More documentation.
+   */
+  virtual const char* GetFullDocumentation()
+    {
+    return
+      "SUBDIRS(dir1 dir2 ...)\n"
+      "Add a list of subdirectories to the build.\n"
+      "This will cause any CMakeLists.txt files in the sub directories\n"
+      "to be processed by CMake.";
+    }
+};
+
+
+
+#endif