Emendation

EMENDA'TION, n. [L. emendatio.] The act of altering for the better, or correcting what is erroneous or faulty; correction; applied particularly to the correction of errors in writings. When we speak of like and manners, we use amend, amendment, the French orthography.

1. An alteration for the better; correction of an error or fault.

The last edition of the book contains many emendations.