: Check terminal type unless on a software tty. 
:ddtsym ttytyp/
:if e q&<%tysty+%tydil>
   (:
[Sty]jump noset
   )
:ddtsym tctyp/
:if e q-%tnsfw>
   (:
[CRTSTY]jump noset
   )

:This would work, but use crtsty instead... :tctyp aaa 

:crtsty vt100 speed 9600
:jump ready

:
[tctyp=AAA]

:tag noset

..byerun/ -1

:exists DSK: KMP; NOSUCH FILE
=

:tag ready
:vk