diff --git a/vlsisapd/src/dtr/src/CMakeLists.txt b/vlsisapd/src/dtr/src/CMakeLists.txt
index 193305ea..9565550c 100644
--- a/vlsisapd/src/dtr/src/CMakeLists.txt
+++ b/vlsisapd/src/dtr/src/CMakeLists.txt
@@ -10,18 +10,18 @@ SET ( cpps Techno.cpp
 
 SET ( pycpps PyDtr.cpp ${cpps})
 
-          ADD_LIBRARY(dtr ${cpps})
+ADD_LIBRARY(dtr ${cpps})
 TARGET_LINK_LIBRARIES(dtr ${LIBXML2_LIBRARIES})
-INSTALL(TARGETS dtr     DESTINATION lib${LIB_SUFFIX})
+INSTALL(TARGETS dtr DESTINATION lib${LIB_SUFFIX})
 
 IF (Boost_FOUND)
-          ADD_LIBRARY(pyDTR MODULE ${pycpps})
-SET_TARGET_PROPERTIES(pyDTR PROPERTIES
-                            COMPILE_FLAGS "${COMPILE_FLAGS} -D__PYTHON_MODULE__=1"
-                            PREFIX        ""
-                     )
-TARGET_LINK_LIBRARIES(pyDTR dtr ${LIBXML2_LIBRARIES} ${Boost_LIBRARIES} ${PYTHON_LIBRARIES})
-INSTALL(TARGETS pyDTR   DESTINATION ${PYTHON_SITE_PACKAGES})
+    ADD_LIBRARY(pyDTR MODULE ${pycpps})
+    SET_TARGET_PROPERTIES(pyDTR PROPERTIES
+                                COMPILE_FLAGS "${COMPILE_FLAGS} -D__PYTHON_MODULE__=1"
+                                PREFIX        ""
+                         )
+    TARGET_LINK_LIBRARIES(pyDTR dtr ${LIBXML2_LIBRARIES} ${Boost_LIBRARIES} ${PYTHON_LIBRARIES})
+    INSTALL(TARGETS pyDTR DESTINATION ${PYTHON_SITE_PACKAGES})
 ENDIF(Boost_FOUND)
 
-INSTALL(FILES   ${hpps} DESTINATION include/vlsisapd/dtr)
+INSTALL(FILES ${hpps} DESTINATION include/vlsisapd/dtr)
diff --git a/vlsisapd/src/dtr/src/PyDtr.cpp b/vlsisapd/src/dtr/src/PyDtr.cpp
index 180e17da..36019e0f 100644
--- a/vlsisapd/src/dtr/src/PyDtr.cpp
+++ b/vlsisapd/src/dtr/src/PyDtr.cpp
@@ -24,6 +24,11 @@ BOOST_PYTHON_MODULE(pyDTR) {
     // class DTR::Name
     class_<Name>("Name", init<std::string>())
         .def("getString", &Name::getString, return_value_policy<copy_const_reference>()) // return_value_policy because this method return a refenrce on string
+        .def(self == self)
+        .def(self == std::string())
+        .def(self != self)
+        .def(self != std::string())
+        .def(self < self)
     ;
 
     // class DTR::Rule