After checking https://docs.google.com/spreadsheets/d/1oL6ldkQdLu-4FEQE0lX6BcgbqzYfNnd1XA8vERe0vpE/edit#gid=530166750 I saw reference to some maximum widths (rules m1.11, m2.11, m3.11 and m4.11), but only for the process with the CU flag (I'm guessing that's a copper-based version of the BEOL). Should we take these values for the aluminum BEOL too? @jeffdi @mkk @Tim 'mithro' Ansell @Tim Edwards

No, those rules are for a copper process that used to be a variant of the old s8 process but is not supported in s130/sky130.

Ok, thanks!