[ns] concept of applying a patch

[Arvind Swaminathan]

Hi,

I apologize for posting this again, but I have not been able to obtain
any information in the ns-users archives or on the web.

I am not able to understand this concept of applying a "patch" to
ns-2. When I click on a hyperlink that advertises a patch, all I see
is a bunch of C code.  I am guessing I have store this code in the
ns-2 directory and do something with it.  But I have not seen any
documentation on how to do this.

This might be fairly routine to seasoned ns-users, but I am new to
ns-2.  Hence, any help in pointing me in the right direction will be
greatly appreciated.

Thanks,
Arvind