What might the final characters in the notes signify?

The final characters in the notes likely signify an end of a message or a checksum. In writing and data transmission, specific characters or sequences are frequently employed to denote the conclusion of a message. This helps in ensuring that the communication is complete and also allows the recipient to verify that the data received has not been altered or lost during transmission. A checksum, for instance, is a computational value that validates the integrity of the data.

Other options may refer to different contexts: starting a new section or referencing a historical event doesn't typically involve a defined end marker, while identifying the author generally occurs at the beginning or the title of the notes rather than at the conclusion. Thus, the presence of final characters serving as an end marker is a practical norm in both written and electronic communications.