Is There a Difference Between Expound and Expound?

The default expound message will say this value, you know, whatever, ABC. And then the next line will say should satisfy string question mark. This is totally backwards compatible with normal spec. If you go back to using just as explained, all of those human readable strings that you've created just will do nothing. They won't show up because obviously spec doesn't know about that. So it's an opt in sort of additive feature.