Markers in Binary file

Hello alltogether,

for me a binary-file (.hex or .bin) looks like there is no structure in it. 

Do you know if it could be possible, to mark all my binarys, so that i can recognize? E. g. with a unique string i could grep or ? Or let's say line xyz start always with with same chars.

Do I have the opportunity to mark all my binaries like that? Is it actually posible?

I develop with ARMClang

Greets