Index: gc_core/py/lang_core/gc_engine.py
==================================================================
--- gc_core/py/lang_core/gc_engine.py
+++ gc_core/py/lang_core/gc_engine.py
@@ -829,10 +829,12 @@
                                 else:
                                     self.dTags[sWhat][0] = min(nTokenStart, self.dTags[sWhat][0])
                                     self.dTags[sWhat][1] = max(nTokenEnd, self.dTags[sWhat][1])
                             elif cActionType == "%":
                                 # immunity
+                                if bDebug:
+                                    print("  IMMUNITY:\n  ", dRule[sRuleId])
                                 nTokenStart = nTokenOffset + eAct[0]  if eAct[0] > 0  else nLastToken + eAct[0]
                                 nTokenEnd = nTokenOffset + eAct[1]  if eAct[1] > 0  else nLastToken + eAct[1]
                                 if nTokenEnd - nTokenStart == 0:
                                     self.lToken[nTokenStart]["bImmune"] = True
                                     nErrorStart = self.nOffsetWithinParagraph + self.lToken[nTokenStart]["nStart"]