Steve- The info is definitely built into the product key. But if you are trying to find out using the ""unfancy poking around"" method here are 2 ways:
_In File Explorer based on what you see for these 2 things:_
Appserv folder under \mas90\Home\Lib --> If exists then Adv or Premium.
Sy_SQL.pvc file in MAS_System folder --> If exists then Premium. If not then Std or Adv.
_Between these 2 commands from SYZCON you can figure it out:_
File > Run > SYZCON
? %sys_ss'CS ! 0 means Standard, 1 means Adv or Prem.
! Note if you start up Adv or Premium via Mas90 style it will return 0
? %sys_ss'SQL ! 1 means Premium. 0 means Std or Adv