This is VTERM, yet another VT52 terminal emulator. This one does text-captures, and allegedly does XMODEM file transfers, but I've never been able to get that to work. There is no doc available, but there's a help screen, accessable by typing ? at the initial screen. This version of VTERM contains an autoloader for an Atari 850. It should work with other devices, but you'll have to provide another driver.