[mkgmap-dev] Assigning a street to more than one city

I've seen City Navigator maps are able to find the same street in two cities. I find this quite useful for the case of big municipalities with a main city and several minor villages belonging to that municipality or big cities with also big suburbs . I these cases you may not be sure what to enter in the "City" field when searching for a given street and finding it in both places eases search. Is it possible to accomplish the same with mkgmp?