At common law, a deed was an instrument under seal that contained a covenant or contract delivered by the individual who was to be bound by it to the party to whom it was granted. 契约,是一种特别的合约,须要经过当事人签署、盖章并送交对方才算有效,契约上的盖章在法律上被视为一种有效的约因。
An agreement or promise made orally or in writing not under seal; a contract. Protocol specified not supported. Set the protocol as the default one& Name Pipes. 协定口头或书面未经盖印的协议或许诺;协定所指定协议不受支持。将该协议设置为默认协议&命名管道。