correct mistakes(dictations, a translation, smb.'s answer, one's composition, spelling mistakes, a faulty order of words, one's pronunciation, one's accent, etc., и т.д.); tool(в печатной форме); set errors right
retract an error(we are not afraid either to contradict ourselves or to retract an error. (from Death of a Hero by Richard Aldington) anpodin); retrieve; repair a mistake(an injustice, an injury, etc., и т.д.)