post-check & pre-check

[NYSiRacer]

What do post-check & pre-check do in the headers? I couldn't find related information from w3's documentations...

Thanks

[coreyp_1]

You've had me on a wild goose chase for this one!

Here's the scoop: Microsoft (shouldn't that say enough?)

In fact, I'm not even going to try to explain it at all... just read about it at their web site:

https://www.microsoft.com/technet/archive/default.asp?url=/TechNet/archive/ie/maintain/ie5cache.asp

HTH