The comment syntax /* ... */ is used in many places in
the documentation, but nowhere explicitly described.
The sequence /*/ seems to parse as a comment:
(D23) b + a
I think that is a bug. Two *'s should be required.
Peculiarly, it can be redefined as an infix operator:
(D29) a /*/ b
It is even possible to redefine "/*" as an infix operator!
(C32) a /* b;
(D32) a /* b
This doesn't seem like a good idea....