Yeah, I think it was but I was just starting in programming and GOSUB didn't made much sense to me as it's not a proper structured programming procedure with i

Yeah, I think it was but I was just starting in programming and GOSUB didn't made much sense to me as it's not a proper structured programming procedure with input and output params but more like a hack with data passed through global variables. And by the time I learned structured programming I already moved to Pascal (HiSoft Pascal : https://www.cpcwiki.eu/index.php/Hisoft_Pascal https://www.cpcwiki.eu/index.php/Hisoft_Pascal ) and there was no turning back to BASIC.