Kermit commands supported by HP50G

[brickviking]

I have what might seem to be a strange question... oh, wait, you lot have converted HP30Bs into scientific calculators and even got them accredited by a school. Now that's weird.

A linux computer, one USB cable, one HP-50g, Bios version 2.15 (who doesn't have this??), ckermit on the Linux side. HPTalx works too, but I thought I'd go old-school and type into the calculator directly from kermit (and be a little nosey to boot).

Code:

(/home/42/) CKermit> remote directory
{ HOME } 242708.5
Stray 185.5 Directory 29225
...

That works fine, I get a listing of objects.
One problem I struck? remote cd Stray doesn't work, I get ?Invalid Server Command instead. I even tried remote cd {HOME Stray}, with exactly the same result.

So, what commands are directly implemented in the 50g's firmware for kermit? I've tried using Google to search for that, but I don't have the right google-fu, or nobody's actually tried to find out.

(Post 22)