All the different attributes can be managed from one tool—the attribute manager. Tasks such as renaming, deleting, duplicating, and purging unused attributes can be performed with the help of the attribute manager. With very large projects, it is good practice to purge unused attributes. If you need to rename multiple layers, use the attribute manager as it will be faster:
Go to the Options menu and navigate to Element Attributes | Attribute Manager.
You will see that there is a tab for each attribute type and a list of all attributes. Most attributes have a Purge Unused button. The following screenshot shows the Fill Types page. Note that you can set whether the fill is available as a drafting, cover, or cut fill at the bottom of the left-hand pane.
