It's called a crenellated border, as in the crenellated battlements of a castle. From the Latin 'crenella', a small notch. Not to be confused with a meander border of the 'Grecian key' type.
It's called a crenellated border, as in the crenellated battlements of a castle. From the Latin 'crenella', a small notch. Not to be confused with a meander border of the 'Grecian key' type.