Edits attributes in a block reference.
Access Methods
Button
Toolbar: Drafting tool set 
Block tool group Edit Attributes flyout Multiple Menu:
Modify
Object
Attribute
Single
Summary
Edits the values, text options, and properties of each attribute in a block.
List of Prompts
The following prompts are displayed.
Select a block:
After you select a block with attributes, the Enhanced Attribute Editor is displayed.