Brass dots on a blade??

[David R]

I have a Syrian dagger with the three dot inlay in copper, in addition to two teardrops in yellow metal and two plain large dots in copper, all arranged symetricaly down the blade . They could have a meaning, but then again, they could be just simple decoration.
I think in some cases, a single nail/rivit at random, they are just a way of hiding a flaw in the blade.