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
@@ -1134,10 +1134,14 @@
         return False
     if dToken["i"] < dTags[sTag][1]:
         return True
     return False
 
+
+def g_tag (dToken, sTag):
+    return "tags" in dToken and sTag in dTags["tags"]
+
 
 def g_space_between_tokens (dToken1, dToken2, nMin, nMax=None):
     nSpace = dToken2["nStart"] - dToken1["nEnd"]
     if nSpace < nMin:
         return False