@chirrolafupa@merveilles.town
Thanks a lot! I just started reading and I like it a lot.
I had to laught about the "postfix notation" and my misunderstanding: I thought you'd mention the mailer daemon :) since I didn't know that term for "Reverse Polish notation".
The solution made me laugh again: It reminded me of the first computer I used in my life. My father owned a HP-67 which I still keep in good faith that I'll get around to learn programming it.