A more thorough explanation:

Emend (i-mend), verb. To correct or revise; especially, to edit or change a text.

• After receiving feedback from her editor, the author decided to emend her manuscript before submitting it for publication.
• The historian spent months carefully emending the original manuscript to ensure its accuracy.

These examples illustrate how emend is used to describe the process of correcting or revising a text. In the first example, the author is making changes to her manuscript based on feedback from her editor. In the second example, the historian is carefully editing the original manuscript to ensure that it is accurate. Both examples demonstrate how emend is used to describe the act of making changes to a written work.