[SQU] What is the differecce between 'TCP_IMS_HIT' and 'REFRESH_HIT'?

Hi, I have a few questions about 'tcp_ims_hit'(TIH) and 'refresh_hit'(RH).

1. In the Internet Explorer, what is the differece between clicking 'refresh' button and pressing 'enter' key in URL space?
Do http headers differ in each case? Do both of them use conditional 'get' ?

2. What is the differecce between 'TCP_IMS_HIT' and 'REFRESH_HIT'?

Thanks

Ryu

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