AutoCAD 2008 User's
Guide > Create and Modify
Objects > Create and Use
Blocks (Symbols) > Modify
Blocks > Modify a Block
Attribute Definition >
Modify a Block Attribute Definition
To edit attributes assigned to a block definition
To specify whether changes are applied to existing block references
To highlight duplicate attribute tags in a block
To change the prompt order for attribute values
To remove an attribute from a block definition and all block references
To update existing block references with attributes you have modified
To update the attributes in block references for a selected block definition
