Leader annotation can be a Tolerance, MText, or Block Reference object. You can create a new annotation, or you can append a copy of an existing annotation. Annotation is added to a leader by assigning the object id of the annotation object to the Annotation property.
引线注释可以是 公差、多行文本或块参照对象。用户可以创建新注释，也可附加现有注释的副本。通过指定注释对象的 ObjectID 给引线对象的 Annotation 属性为引线添加注释。
