TCP Packet Acknowledgement Number

Hello,

I was using a program to view the tcp packets coming to my pc such as when i go to a web page. It shows the packet data, acknowledgement number, sequence number, etc. So I learned from viewing this information that the acknowledgement number is the same throughout a packet.

My question is how would you determine the last packet has arrived for that web page? In otherwords, if you were viewing all of the packets coming in for a single web page, how do you know when the last one has arrived? Is there some sort of flag or something to show this?

Thanks,

Warren