Consider a situation where we'd like to pass a pointer to a function, have the pointer point to something else, and have that assignment reflected in the caller. To accomplish just that, we can pass a pointer by reference to a function! Given the following declaration:

void MyFunction$($int$*$& param$)$;

what is the type of MyFunction's parameter param?

Hint: the declarator operators in the declaration int$*$& param bind to the type with left$-$to$-$right associativity. Expanding out from the type, we see int followed by $*.$ At this point, we have an int$*$ aka a pointer to an int object. Subsequently, we observe the &$,($int$*)$&$.$ Therefore, we can read this declaration from right$-$to$-$left: param is a reference to a pointer to an integer object.