On Wed, 21 Apr 2021, it was written
  If there are FORTRAN-esque commands added to the core
Dartmouth version I
 would search for another instance prior to MINICAL where this was done.
 Back then BASIC flavors and adaptations were becomming common so it may
 simply be MINICAL BASIC would have been just as easy for a period
 programmer to whip up from scratch. 
Minor correction: it's MINCAL (as in Dietz MINCAL), not MINICAL.
Christian