diff --git a/EMkMachiningGeoConst.h b/EMkMachiningGeoConst.h
index e765599..1ef57fd 100644
--- a/EMkMachiningGeoConst.h
+++ b/EMkMachiningGeoConst.h
@@ -41,8 +41,10 @@ static std::string MCH_PATH = "P" ;
 static std::string MCH_CL_CLIMB = "CLIMB" ;
 static std::string MCH_CL_RISE = "RISE" ;
 static std::string MCH_CL_HOME = "HOME" ;
+static std::string MCH_CL_SAFEIN = "SI" ;
 static std::string MCH_CL_LEADIN = "LI" ;
 static std::string MCH_CL_LEADOUT = "LO" ;
+static std::string MCH_CL_SAFEOUT = "SO" ;
 static std::string MCH_CL_AGB_DWN = "AGBD" ;
 static std::string MCH_CL_AGB_IN = "AGBI" ;
 static std::string MCH_CL_AGB_OUT = "AGBO" ;