For gf180mcuC magic displays layers rmetal5 and metal5. What is the difference between the two?

rmetal5 is the recognition layer for metal5 resistors. Actually, normally just used to logically break the circuit when you want to separate nets (for example the ports on an inductor). rmetal5 is not a mask layer and doesn’t make any difference in the actual silicon circuit.

Thank you, David, for the very fast response.