BATTMAN - Block Attribute Manager. From Autodesk Help... You can edit the attribute definitions in blocks, remove attributes from blocks, and change the order in which you are prompted for attribute values when inserting a block.
Attributes of the selected block are displayed in the attribute list. By default, Tag, Prompt, Default, Mode, and Annotative attribute properties are displayed in the attribute list. You can specify which attribute properties you want displayed in the list by choosing Settings.
For each selected block, a description below the attribute list identifies the number of its instances in the current drawing and in the current layout.