This thread got me pondering about another peculiarity of EDIT AND MARK – specifically under exactly what cases does GR1 not get updated.
I dusted off an old presentation that I had on the two instructions, added some presenter notes (where the meat of the presentation really lives), and uploaded it to my Google drive: https://docs.google.com/presentation/d/1IQL5ePnAxapg0Vm7y8_iPePKuYO_ibBg/edit?usp=sharing&ouid=104012833061983447284&rtpof=true&sd=true (Wouldn't it be swell if the Assembler List bulletin board allowed attachments like some other U. of G. boards permit?)
