Wow. That brings back memories.
As a graduate student in high energy physics, I got my very own 3270 terminal, connected to the mainframe downstairs by twinax cables.
Best keyboard I have ever had.
Many joyful days running virtual machines under CMS. I remember the REIPL CMS command to reboot (Initial Program Load). It probably would all come back if I got a 3270 in front of me!
In later days I got a FALCO terminal at CERN. VT220 emulation, plus a hotkey to Tektronix graphics emulation. I used a 3270 emulator on DEC VMS to access the mainframes there.