\section*{GDSMill} \label{sec:gdsMill_permission} OpenRAM uses gdsMill, a GDS library written by Michael Wieckowski at the University of Michigan. Michael gave us complete permission to use the code. Since then, we have made several bug and performance enhancements to gdsMill. In addition, gdsMill is no longer available on the web, so we distribute it along with OpenRAM. \begin{verbatim} From: Michael Wieckowski Date: Thu, Oct 14, 2010 at 12:49 PM Subject: Re: GDS Mill To: Matthew Guthaus Hi Matt, Feel free to use / modify / distribute the code as you like. -Mike On Oct 14, 2010, at 3:07 PM, Matthew Guthaus wrote: > Hi Michael (& Dennis), > > A student and I were looking at your GDS tools, but > we noticed that there is no license. What is the license? > > Thanks, > > Matt \end{verbatim}