Mormon wrote his abridgment of the large plates of Nephi on "plates of ore" that he had made with his own hands. He does not mention the technique used in writing the language characters on the metal plates (etching, embossing, etc.), but students have sometimes wondered how Mormon could correct something he had already written. Alma 24:19 might give us some clue to this matter. Concerning the converted Lamanites, Mormon had written that "they buried their weapons of peace." Then, evidently realizing that he had not intended exactly what he had written, he added "or they buried the weapons of war, for peace." Other examples of similar changes in the Book of Mormon are found in Mosiah 7:8, Alma 50:32, Helaman 3:33, and 3 Nephi 16:4.