Type AOL or select AOL from Autodesk® AutoCAD® Ribbon > Add-ins > Area Object Link panel to start the command.

The first time AOL is executed, a graphic user interface (GUI) will appear displaying the current AOL Commands & Settings. 

The end user can choose one of four AOL Area Object Commands to run:

• Link already drawn Circles, Ellipses, Hatches, Plines or Regions' Area value using Fields to an already placed Attribute, MText or Text
• Insert a pre-built AOL Block with Attributes & then link using Fields to already drawn Circles, Ellipses, Hatches, Plines or Regions' Area
• Show Circles, Ellipses, Hatches, Plines or Regions highlighted & shaded with Areas linked using Fields to selected Attribute, MText or Text
• Update Fields in Attributes, MText, Text & AOL Block Attributes with Area Object Links to match with the current AOL Option settings

AOL offers the following Option settings:

• Choose Imperial or Metric as your drawing unit standard
• Select an Insertion Scale factor to bring in the pre-built AOL Block Attribute
• Use the horizontal slide bar or enter a specific Rotation angle to insert the pre-built AOL Block Attribute
• The Area can be measured using a number of standard conversion Factors in both Imperial or Metric systems including an option to enter a Custom Factor
• Select the option to include a Suffix to the Area value
• Set a decimal Precision using Dot or Comma or Round the calculated Area value Up or Down

After the first time, the following occurrences of running AOL will automatically take on the previously selected Command & Option settings bypassing the GUI.

Type AOLSET or select AOLSET from AutoCAD's Ribbon > Add-ins > Area Object Link panel to bring the Command & Option settings GUI up again to make additional changes.

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. OR, simply double-click the downloaded installer to install the app/plugin. You may need to restart the Autodesk product to activate the app/plug-in. To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. OR, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10/11) and uninstall as you would any other application from your system.

The end user should set the AutoCAD Fieldeval system variable to 31 so that the Area saved as a Field in the Block Attribute or Text will automatically update.

Also as stated in AutoCAD help file on Fieldeval, one of the following commands will need to be executed for the Area value to automatically update: Open, Save, Plot, eTransmit and Regen.