accord+knowledge. accord好几个意思，knowledge不遑多让，We gotta acknowledge the word acknowledge has many meanings.

Advice or acknowledgment of receipt is a postal service returning to the sender a form or card signed by the recipient. This is evidence that the letter was received, and these forms (or cards) are frequently seen with legal endorsements. It had existed under various names in some postal entities as early as the late 18th century, and was adopted by the GPU General Postal Union in 1875, and again by its successor, the UPU Universal Postal Union in 1879.

The Transmission Control Protocol (TCP) is one of the main protocols of the Internet protocol suite. TCP is a reliable stream delivery service which guarantees that all bytes received will be identical and in the same order as those sent. Since packet transfer by many networks is not reliable, TCP achieves this using a technique known as positive acknowledgement with re-transmission. This requires the receiver to respond with an acknowledgement message as it receives the data. The sender keeps a record of each packet it sends and maintains a timer from when the packet was sent. The sender re-transmits a packet if the timer expires before receiving the acknowledgement. The timer is needed in case a packet gets lost or corrupted.

In law, an acknowledgment is a declaration or avowal of one's own act, used to authenticate legal instruments, which may give the instrument legal validity, and works to prevent the recording of false instruments or fraudulent executions. Acknowledgement involves a public official, frequently a notary public. The party executing the legal instrument orally declares that the instrument is his or her act or deed, and the official prepares a certificate attesting to the declaration. Acknowledgments are distinct from jurats, verifications, and attestations. A jurat differs from an acknowledgement in that a jurat lacks the statement that the instrument is the act or deed of the party executing it. A verification is distinct in that it seeks to verify the factual contents of the instrument, rather than the instrument itself. Finally, an attestation occurs where a third person gives his or her name as a witness to the actual execution of an instrument. Normally, acknowledgments only serve evidentiary purposes, but some jurisdictions have made acknowledgement a requirement for recording of instruments.

According to TBBT, 学物理的Sheldon干不过学法律的Priya, schooled.

Form for Ordinary Certificate of Acknowledgment

State of Texas
County of _______________
Before me, (insert the name and character of the officer), on this day personally appeared
____________________, known to me (or proved to me on the oath of ______________ or
through (description of identity card or other document)) to be the person whose name is
subscribed to the foregoing instrument and acknowledged to me that he executed the same for
the purposes and consideration therein expressed.
Given under my hand and seal of office this __________ day of __________, (year).
______________________
Notary Public's Signature
(Personalized Seal)

SAMPLE FORMS OF ACKNOWLEDGMENTS IN TEXAS
1. Texas Civil Practices and Remedies Code – Section 121.006
(a) An acknowledgment form provided by this chapter may be altered as circumstances require. The authorization of a form does not prevent the use of other forms. The marital status or other status of the acknowledging person may be shown after the person's name.
(b) In an acknowledgment form "acknowledged" means:
(1) in the case of a natural person, that the person personally appeared before the officer taking the acknowledgment and acknowledged executing the instrument for the purposes and consideration expressed in it;
(2) in the case of a person as principal by an attorney-in-fact for the principal, that the attorney-in-fact personally appeared before the officer taking the acknowledgment and that the attorney-in-fact acknowledged executing the instrument as the act of the principal for the purposes and consideration expressed in it;
(3) in the case of a partnership by a partner or partners acting for the partnership, that the partner or partners personally appeared before the officer taking the acknowledgment and acknowledged executing the instrument as the act of the partnership for the purposes and consideration expressed in it;
(4) in the case of a corporation by a corporate officer or agent, that the corporate officer or agent personally appeared before the officer taking the acknowledgment and that the corporate officer or agent acknowledged executing the instrument in the capacity stated, as the act of the corporation, for the purposes and consideration expressed in it; and
(5) in the case of a person acknowledging as a public officer, trustee, executor or administrator of an estate, guardian, or other representative, that the person personally appeared before the officer taking the acknowledgment and acknowledged executing the instrument by proper authority in the capacity stated and for the purposes and consideration expressed in it.