The docs may explain it, but trying Googling for qq{perl "$? >> 8"} sometime. Google doesn't even honor the phrase so the results are not that impressive. On Google it's hard if not impossible to search for "$? >> 8? -- try it without "perl" and you will get links to the number 8 because Google is not searching on the phrase even though it is in quotes (probably too many special characters). One more reason not to like the five bazillion special two character variables Perl has (of course, when typing them in, most of us really like them! :-)