Area Object Link (AOL)is an add-in app coded entirely usingAutoLISP®/Visual LISP®offering 100%Autodesk® AutoCAD®compatibility.AOLcontains sixcommand modulesfiveof which offers a graphic user interface (GUI) to facilitate the implementation ofFieldsto linksupported objects area/perimeter values.

(1./2./3.) Area Object Link (AOL) / Perimeter Object Link (POL) / Area Perimeter Link (APL) Modules’ GUI consists of the following:

A.    Area/Perimeter Object Commands:

1.     Link - simplifies steps needed to Link the Area / Perimeter value of already drawn Circles, Ellipses*, Hatches*, Plines, or Regions as Fields to already placed Attribute, MText, or Text.

2.     Insert - proceeds to insert a pre-built AOL/POL/APL Block and then links using Fields the Attributes to already drawn Circles, Ellipses*, Hatches*, Plines or Regions' Area / Perimeter value.

3.     Draw – the Pline command is used to draw a closed boundary shape and then insert the AOL/POL/APL Block, linking the attribute to the area/perimeter value.

4.     Select – offers the user the option to select already pre-drawn supported objects like closed Plines and then automatically insert the AOL/POL/APL Block at the center of each selected shape linking the Attributes to the Area / Perimeter value

5.     Show - allows the user to select an Attribute, MText, or Text with Fields to show the object(s) highlighted & shaded that have linked Area / Perimeter values.

6.     Update - gives the user the option to select pre-built AOL/POL/APL Block, Attribute, MText, and Text objects with Fields that contain linked Area / Perimeter values updating them to match the current AOL/POL/APL Option settings.
* = Ellipses and Hatches only offer Area value

B.    Area/Perimeter Option Settings:

1. Both Imperial (1 unit = 1 Foot or Inch) & Metric (1 unit = 1 Meter, Decimeter, Centimeter or Millimeter) drawing units are supported.
2. The Area/Perimeter value can be measured both in Imperial units (Square Feet/Feet, Square Inch/Inch, Square Yard/Yard, Square Mile/Mile or Acre) & in Metric units (Square Meter/Meter, Square Centimeter/Centimeter, Square Millimeter/Millimeter, Hectare or Square Kilometer/Kilometer). You can also enter a custom Area/Perimeter measuring Factor.
3. You can select various Insertion Scale Factors and rotation Angles, choose to add a Prefix/Suffix to the Area's/Perimeter’s value such as SF/F or SM/M, and show the Area/Perimeter value formatted to a given decimal Precision using Dot or Comma or Rounded Up or Down.

(4.) Area Object Table (AOT) Module’s GUI consists of the following:

1. Table creation for one of the following Blocks: AOL/POL/APL.
2. Options to generate and place the summary into Excel and show a row at the bottom with the Area/Perimeter value totals.
3. Customize the Summary Table’s Title and Column Headings.

(5.) Attribute Change Layer (ACL) Module changes selected Block and Attributes layers to match with the selected target object.

(6.) Area Object Link Information (AOLINF) Module’s GUI shows the app’s version history, the option to show the app’s Toolbar and publisher information.