what do you mean by patch?

when i visit any members profile there i see a writing (patches).but what is this patch for.what is its uses?i know its for pro members.

thanks for viewing and further answering.

It's just something people can pass on to one another. Also, the site sends patches/achievements to winners of contests.
argha halder (author)  Penolopy Bulnick4 years ago
thanks for the answer!
Vyger4 years ago
I just sent you one.
argha halder (author)  Vyger4 years ago
thank you very much for the patch!