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diff --git a/Source/cmWhileCommand.h b/Source/cmWhileCommand.h
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+/*=========================================================================
+
+  Program:   CMake - Cross-Platform Makefile Generator
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even 
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#ifndef cmWhileCommand_h
+#define cmWhileCommand_h
+
+#include "cmCommand.h"
+#include "cmFunctionBlocker.h"
+#include "cmListFileCache.h"
+
+/** \class cmWhileFunctionBlocker
+ * \brief subclass of function blocker
+ *
+ * 
+ */
+class cmWhileFunctionBlocker : public cmFunctionBlocker
+{
+public:
+  cmWhileFunctionBlocker() {m_Executing = false;}
+  virtual ~cmWhileFunctionBlocker() {}
+  virtual bool IsFunctionBlocked(const cmListFileFunction& lff,
+                                 cmMakefile &mf);
+  virtual bool ShouldRemove(const cmListFileFunction& lff, cmMakefile &mf);
+  virtual void ScopeEnded(cmMakefile &mf);
+  
+  std::vector<cmListFileArgument> m_Args;
+  std::vector<cmListFileFunction> m_Functions;
+  bool m_Executing;
+};
+
+/** \class cmWhileCommand
+ * \brief starts a while loop
+ *
+ * cmWhileCommand starts a while loop
+ */
+class cmWhileCommand : public cmCommand
+{
+public:
+  /**
+   * This is a virtual constructor for the command.
+   */
+  virtual cmCommand* Clone() 
+    {
+    return new cmWhileCommand;
+    }
+
+  /**
+   * This overrides the default InvokeInitialPass implementation.
+   * It records the arguments before expansion.
+   */
+  virtual bool InvokeInitialPass(const std::vector<cmListFileArgument>& args);
+    
+  /**
+   * This is called when the command is first encountered in
+   * the CMakeLists.txt file.
+   */
+  virtual bool InitialPass(std::vector<std::string> const&) { return false; }
+
+  /**
+   * This determines if the command gets propagated down
+   * to makefiles located in subdirectories.
+   */
+  virtual bool IsInherited() {return true;}
+
+  /**
+   * This determines if the command is invoked when in script mode.
+   */
+  virtual bool IsScriptable() { return true; }
+
+  /**
+   * The name of the command as specified in CMakeList.txt.
+   */
+  virtual const char* GetName() { return "WHILE";}
+
+  /**
+   * Succinct documentation.
+   */
+  virtual const char* GetTerseDocumentation() 
+    {
+    return "Evaluate a group of commands while a condition is true";
+    }
+  
+  /**
+   * More documentation.
+   */
+  virtual const char* GetFullDocumentation()
+    {
+    return
+      "  WHILE(condition)\n"
+      "    COMMAND1(ARGS ...)\n"
+      "    COMMAND2(ARGS ...)\n"
+      "    ...\n"
+      "  ENDWHILE(condition)\n"
+      "All commands between WHILE and the matching ENDWHILE are recorded "
+      "without being invoked.  Once the ENDWHILE is evaluated, the "
+      "recorded list of commands is invoked as long as the condition "
+      "is true. The condition is evaulated using the same logic as the "
+      "FOR command.";
+    }
+  
+  cmTypeMacro(cmWhileCommand, cmCommand);
+};
+
+
+#endif