Whats about all this "receive/send ---name " ??

I've been trying to find some info...but I can't.... I'm also trying to find some info, to use this unique's id's "#0" i've seen some people use them... But I can't find info algo...

Cause I'm having trouble duplicating bpatchers, patchers, etc... and having to save them 001,002,etc.. Not efficient at all = )

Sorry if it's a newbie question. But I don't find a tutorial, or documentation. Any help?¿

Thanks in advance for your time and help. Cheerz from Spain.