@Tim Edwards Is there a way to use Magic's DRC functionality as an API for 3rd-party apps? Where can I find the function in the source code?

There are no function calls per se for Magic's DRC; it is tied to the corner-stitched database; also, it is spread throughout the source code, although the main part of it is in the

drc

directory. If you're looking for a DRC engine that can be used as an API for 3rd party apps, use klayout.

Thanks a lot @Tim Edwards What is

corner-stitched database

?