but I don’t think the stack is read only

I don't mean the stack is read only (edit: yes I meant that in my previous reply, but got confused myself, I actually never thought the entire stack being read only, I was only thinking about those specific variables and literal strings, sorry for confusion), but certain variables holding values that are only used to read and not change. In example you cannot change literals, therefore they are read only values. In example if you have a program that prints "Hello Lemmy", that string is a literal that cannot be altered, and it is found in the application itself, as part of the binary. That part maybe is marked as read only?