Do you know why the biscuits are the holes?

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guys, maybe some of you not so care or interested to know about this. but my friend that work at bakery tell me the reason why biscuits have hole on it. this is the explanation. Holes found on dry biscuits turned out to have a reason, not just a decoration or to facilitate the manufacturing process, as many people expect. Without these holes, will not dry biscuits baked properly. These holes allow steam to escape during the roasting process. This will make the biscuits remained flat, and not expand the hole up so it helps to keep crackers crisp and crunchy. In contrast to the usual sweet biscuits, they do not have a hole to make it a biscuit a little fluffy and feels soft. When the crackers are made, trim the dough to form a flat sheet. These sheets are then run under a mechanism that contains the pins to put the holes in the dough. The position and number of holes varies depending on the size and shape of dry biscuits. Holes are also positioned such that the number of hole not too much and not too close to the hole position. Because if the holes are too close or there's too much, dry biscuit dough will be very dry and hard, because too much steam comes out. Conversely, if the holes are too far away or there's too little, the dough will expand slightly to form small bubbles on the surface of the biscuit. so, do you like biscuits guys??? i like it very much.