Holes in crackers, often called “docking holes,” aren’t just for decoration—they serve an important purpose. They allow steam to escape during baking, which prevents the cracker from puffing up or forming air bubbles. This keeps the cracker flat, crisp, and evenly baked.
So, the next time you see tiny holes in a cracker, remember: they’re there to make it perfectly crunchy!
So they don’t split, while cooking.
That makes sense I wouldn’t have thought of that thank you for sharing hour comment Ethienne

Thanks, David, for sharing that bit of information that is good to know