We’ll assume this is the post you were answering to in that reply.
They are called Quoins, a term for the square protruding brick at the corner of a building. They can also be done in stone. you will see that the Quoins are 4 courses tall with two courses of running bond between them. Because the quoins are 4 courses tall, it does give the impression that the re are 5 courses of stack bond.
We used to incorporate them into a lot of the brickwork on our homes as they really accent the corners and dress up the job a lot.