diff --git a/LEGO1/mxatomid.h b/LEGO1/mxatomid.h
index 9a218a1b..6b7dddbb 100644
--- a/LEGO1/mxatomid.h
+++ b/LEGO1/mxatomid.h
@@ -1,8 +1,14 @@
 #ifndef MXATOMID_H
 #define MXATOMID_H
 
+#include "mxtypes.h"
+
 enum LookupMode
 {
+    LookupMode_Exact = 0,
+    LookupMode_LowerCase = 1,
+    LookupMode_UpperCase = 2,
+    LookupMode_LowerCase2 = 3
 };
 
 class MxAtomId
@@ -17,6 +23,11 @@ class MxAtomId
     this->m_internal = 0;
   }
 
+  inline MxBool operator ==(const MxAtomId &other) const
+  {
+    return this->m_internal == other.m_internal;
+  }
+
 private:
   char *m_internal;
 };