A liquidated damages clause sets an amount in a contract in the event of a breach. A liquidated damages clause isn't a penalty, though it may sound like one. A penalty is usually disproportionate to the actual harm, and is meant to punish or deter breaching a contract.
Acidic stools can be caused from absorption problems from the diet and foods you eat. Some people have acidic stools as a result of a lactose intolerance.
Bile salts from the liver give stool its brownish color and when bile output is diminished, it often first appears as yellow stool. If the stool is also greasy and foul-smelling, there may be excess fat in the stool -- causes include malabsorption disorders such as celiac disease.