Take Facebook as an example, I found OPT PSEUDOSECTION
doesn't exist in the first query request, but exist in the second try.
What does OPT PSEUDOSECTION
mean?
Why it doesn't exist in the first try?
Take Facebook as an example, I found OPT PSEUDOSECTION
doesn't exist in the first query request, but exist in the second try.
What does OPT PSEUDOSECTION
mean?
Why it doesn't exist in the first try?