@User: All rules with "CU" are not applicable to the SKY130 process and need to be removed. I think it's the "minimum critical dimensions" table in particular that has not been cleaned up. If you look at the individual rule sets, it's a bit clearer. Note that SkyWater confusingly uses the terms "periphery" and "core", which we also need to fix---these are left over from Cypress memory chips, when "core" meant the SRAM and "periphery" meant everything else. Those terms are an extremely poor choice for anything that is not a memory chip.