What is Mounting?

It's a mapping from URL-V to URL-R in request messages, and mapping URL-R to URL-V in response messages.

Example 1

V:
R:

Press the MOUNT button then you will be able to access http://www.delegate.org/* as if it is http://${hostport.clif}/mirror/dg/*.

Example 2

V:
R:

Example 3

V:
R: