Free42 NSTK ENTER behavior

[Peet]

(10-16-2021 01:07 PM)squid2 Wrote:  I think the reason I feel this way (compared to old timers like Peet) is that I haven’t been using classic HP 4-register “stack” based calculators for 40+ years. HP switched to an “unlimited depth” (normal to me) stack in RPL machines years before I was born, and I was taught RPN as being based on a stack rather than four registers.

Not only an other argumentum ad hominem, also again fictitious facts. Not exactly a base for an objective discussion.
FYI: The first HP Calculator with "entry RPN" (big stack) was the HP-28c (1987). In the current Line-up HP has 4 RPN Calculators. 3 with "classic" and only one with "entry" RPN.