Why does TINYINT(1) function as a boolean but INT(1) does not?

Question

Why does TINYINT(1) work as a boolean? The way I understood the official docs, the (1) should mean it has a display width of 1, so if I store 56 in

Answer 1

As I understand it, TINYINT(1) can only hold '0' or '1' (from own experience).
Thus, one can assume that the '0' or '1' is translated into true or false.