When I was checking the error log on a PC running RH
Linux and Steel 2.01 I got the UNDEFINED error when
exiting the option. I found some code in this routine
; GT.M doesn't have a vendor-specific error trap lister
;Q:'$D(^%ZOSF("OS")) Q:("OS")="" Q:XUEROS["GT.M"
I didn't have the XUEROS variable defined.
I changed this to:
Q:'$D(^%ZOSF("OS")) Q:^("OS")="" Q:^("OS")["GT.M"
and it seems to work as intended.