[ns] Protocol Extension

[Ahmad Khayyat]

Hi all,

I would like to extend an existing protocol in ns-2. Is it better if I 
extend its classes, or if I just copy the folder and add my modifications?

In case I went for copying the folder, what exactly do I need to do 
after copying the folder? I guess I will have to rename the classes and 
the structures and add the new folder to the Makefile.. do I need to do 
anything else? Is there a reference I should consult to find out what 
exactly I need to do?

Thanks,
- Ahmad Khayyat