in the absence of any special licenses. The modern emphasis on negotiability may also be traced to Lord Mansfield. Germanic Lombards documents may also have some elements of negotiability. Distinguished from other types of contracts A negotiable instrument can serve to convey value constituting at least part of the performance of a contract, albeit perhaps not obvious in contract formation, in terms inherent in and arising from the requisite offer and acceptance and conveyance of consideration. The underlying contract contemplates the right to hold the instrument as, and to negotiate the instrument to, a holder in due course, the payment on which is at least part of the performance of the contract to which the negotiable instrument is linked. The instrument, memorializing: (1) the power to demand payment; and, (2) the right to be paid, can move, for example, in the instance of a "bearer instrument", wherein the possession of the document itself attributes and ascribes the right to payment. Certain exceptions exist, such as instances of loss or theft of the instrument, wherein the possessor of the note may be a holder, but not necessarily a holder in due course. Negotiation requires a valid endorsement of the negotiable instrument. The consideration constituted by a negotiable instrument is cognizable as the value given up to acquire it (benefit) and the consequent loss of value (detriment) to the prior holder; thus, no separate consideration is required to support an accompanying contract assignment. The instrument itself is understood as memorializing the right for, and power to demand, payment, and an obligation for payment evidenced by the instrument itself with possession as a holder in due course being the touchstone for the right to, and power to demand, payment. In some instances, the negotiable instrument can serve as the writing memorializing a contract, thus satisfying any applicable statute of frauds as to that contract. The holder in due course The rights of a holder in due course of a negotiable instrument are qualitatively, as matters of law, superior to those provided by ordinary species of contracts: The rights to payment are not subject to set-off, and do not rely on the validity of the underlying contract giving rise to the debt (for example if a cheque was drawn for payment for goods delivered but defective, the drawer is still liable on the cheque) No notice need be given to any party liable on