Creates an attribute definition for storing data in a block.
Access Methods
Button
Toolbar: Drafting tool set 
Block tool group Define Attributes Menu:
Draw
Block
Define Attributes
Summary
The Attribute Definition dialog box is displayed.
If you enter -attdef at the Command prompt, options are displayed.
An attribute is an object that is created and included with a block definition. Attributes can store data such as part numbers, product names, and so on.