correction -
treatment of a specific defect; "the correction of his vision with eye glasses"
therapy (medicine) the act of caring for someone (as by medication or remedial training etc.); "the quarterback is undergoing treatment for a knee injury"; "he tried every treatment the doctors suggested"; "heat therapy gave the best relief"
correction -
something substituted for an error
editing,
redaction putting something (as a literary work or a legislative bill) into acceptable form