FC?C and FS?C usefulness

[JoJo1973]

Thanks Pauli, I didn't realize that the instructions originate from RPN so I haven't specified that I was referring to RPL language.

I can see why they're useful in RPN context but their utility in RPL escapes me, since at user level the conditionals don't follow the skip-if-true logic.

And then, why no FC?S and FS?S ? It's evident that whoever proposed these commands gave greater importance to flags being cleared than set... probably the reason is obvious to those versed in RPN, but I'm not one of the lot!