ATTESTATION, the verification of a deed, will, or other instrument by the signature to it of a witness or witnesses, who subscribe to a memorandum, to the effect that it was signed or executed in their presence, showing that at the execution of the document there was present some disinterested person capable of giving evidence as to what took place. In Scots law, the corresponding clause is called the testing-clause (see DEED; WILL OR TESTAMENT; WITNESS).
AT THE MARKET, a term used in instructions to brokers in securities or commodities authorizing them to buy or sell at the most favourable price as promptly as possible after the order is given. Brokers receiving orders on such terms convey them to the exchange floor at once, where the floor trader will attempt to put through the trade upon the best possible terms for his cus tomer. While no price is named and no price limit is set, the broker is expected to make the purchase or sale within a fraction of the price set by the last transaction in the same security or commodity.