I'm trying to debug around class DRCDeck ..
More details on what a I observe:
[1] Rules likes letal1 to metal2 distance (using m1-to-m2 jut for debugging)
does not even get into this function as argument
public static void exportDRCRule(PrintWriter out, DRCTemplate rule)
[2] when I add rule to DRC file (XML deck) it is imported successfully
and the rule is successfully used for rule check
<LayersRule ruleName="7.3 Mosis" layerNames="{Metal-1,Metal-2}" type="SPACING" when="DE|SU" value="4.0"/>