I'll give you props for studying the systems manuals and not the handmade Adventure maps drawn on green-bar paper and hidden behind the back of the last 3270 at the far end of the row of tape request consoles.

I was on the DEC side with an amber VT220 and always thought it was cool that the 3270 could scream "mount me now dammit!" in flashing red block letters while the operators weren't sure if they should drop the keys or pick up the lantern.