This is fantastic. I'm 54 and thus old enough to remember writing my programs one card at a time on an 026 or 029 keypunch. A DECwriter with TSO was like heaven

This is fantastic. I'm 54 and thus old enough to remember writing my programs one card at a time on an 026 or 029 keypunch. A DECwriter with TSO was like heaven. Great simulation and highly evocative of that earlier time. Kudos to the creators!