Need Input on Cache-Control in ASP, HTML...

[PFMcCracken]

<meta HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">

<meta HTTP-EQUIV="Expires" CONTENT="Tues, 01 Jan 1980 00:00:00 GMT">

<meta HTTP-EQUIV="Cache-Control" CONTENT="no-cache">

<meta HTTP-EQUIV="Cache-Control" CONTENT="no-store">

<meta HTTP-EQUIV="Cache-Control" CONTENT="post-check=0">

<meta HTTP-EQUIV="Cache-Control" CONTENT="pre-check=0">

I understand about the expires and no-cache... Can anyone explain in more
detail some of of what I have above??