+echo Usage: %0 [Rebuild] [ForceRebuild] [Reconfig]\r
+echo Rebuild: Incremental build, only build those updated tools; \r
+echo ForceRebuild: Rebuild all tools neither updated or not; \r
+echo Reconfig: Reinstall target.txt, tools_def.txt, FrameworkDatabase.db. \r
+echo.\r
+echo Note that target.template, tools_def.template, FrameworkDatabase.template will be\r
+echo only copied to target.txt, tools_def.txt, FrameworkDatabase.db respectively if they\r
+echo are not existed. Using option [Reconfig] to do the force copy. \r