No, the documentation is expecting you to go read some other documentation to answer a perfectly reasonable question, and doesn't even have the courtesy to tell you where that documentation is. Certainly most Perl programmers with any degree of experience can probably work it out, even if they haven't used that debugger feature before, but that logic applies to a lot of things that are, nonetheless, extensively documented—which I've always regarded as a feature of Perl's documentation, to be honest.