Attribute Definition object
An Attribute Definition defines the prompt, tag string, default value, and display characteristics of an attribute. When you insert a block into a drawing you get a BlockInsert object. If the BlockInsert "has attributes," you can iterate through the Attribute objects in the Attributes collection using the Has Attributes method. Each Attribute is an individual instantiation of the AttributeDef object in the Block. It is this Attribute object that contains the value of the attribute.