Thanks, Don. I took a class from Mark at UMCP but I can't remember which one just now. He was one of my favorite instructors and I was sad when he went to PARC,

Thanks, Don. I took a class from Mark at UMCP but I can't remember which one just now. He was one of my favorite instructors and I was sad when he went to PARC, but much sadder still when he died at such a young age.