I have recently played with a plain VM/370 R6 and it's very bare compared to CE - not even bold in the terminal to highlight your current line in EDIT. I was thinking of adding it to my collection of Docker images, but I need to play with tape images and, perhaps, load a bunch of them into the container image so there is something to do with it that resembles modern computing.

> not even bold in the terminal to highlight your current line in EDIT

CMS EDIT was designed when the 3277 was the standard terminal. Those things had a SYSTEM AVALIABLE indicator on the center of the right side of the screen, outside the text area. That was the current-libe marker! When the 3278 came out, all the indicators moved to before the text area, but by then, everyone had moved to EDGAR or XEDIT.