Area Object Link (AOL)

Area Object Link (AOL)



Area Object Link (AOL) is an add-in app coded entirely using AutoLISP®/Visual LISP® offering 100% Autodesk® AutoCAD® compatibility. AOL provides a graphic user interface (GUI) adding 4 new & powerful commands to facilitate the implementation of Fields but bypassing the complexity of the Fields GUI.


AOL Area Object Commands:

  1. Link - simplifies steps needed to Link the Area 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 Block and then links using Fields the Attributes to already drawn Circles, Ellipses, Hatches, Plines or Regions' Area value.
  3. Show - allows the user to select an Attribute, MText or Text with Fields to show the object(s) highlighted & shaded that have linked Area values.
  4. Update - gives the user the option to select pre-built AOL Block, Attribute, MText and Text objects with Fields that contain linked Area values updating them to match the current AOL Option settings.


AOL Option Settings:

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

About This Version

Version 4.1.0, 3/29/2023
New App Icon on App Store Added under INSERT Command a Yes or No option so user can choose to link Attribute to Object's area. Added under PRECISION Dot or Comma option as symbol for decimal separator.

Screenshots and Videos

Customer Reviews

6 reviews
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  • very useful. great lsp
    Mark Allan Estrada | October 05, 2021 Verified Download (What's this?)

    very useful. great lsp

    Paul Li (Publisher) | October 06, 2021

    Thank you...glad you can make good use of this app.

  • Help.
    Tan Nhat | July 21, 2021 Verified Download (What's this?)

    Great! It took me a lot of work to do this manually. you can add option about decimal separator. in my country use comma instead of period. thanks

    Paul Li (Publisher) | July 22, 2021

    Glad this saved you lots of work....I may consider adding the comma option as the decimal separator in future versions.

    Paul Li (Publisher) | September 03, 2021

    Version 4.1.0 released on September 3, 2021 added the comma option as a decimal separator.

  • Exactly what I wanted!
    Andrea Harris | April 27, 2018 Verified Download (What's this?)

    This is a graeat Lisp routine to relink a field, thank you.

    Paul Li (Publisher) | July 12, 2022

    Thank you...glad this is helpful for you.

  • Spectacular !!!!
    Daniel Moraes | March 28, 2018 Verified Download (What's this?)

    Very, very usefull . Save us a tons os hours !!!! Thanks !

    Paul Li (Publisher) | July 12, 2022

    Thank you...glad this is beneficial for you.

  • more personalization
    harinezumi 針鼠 | January 22, 2017 Verified Download (What's this?)

    I like most the link function (I use mtexts). But I need more personalization: I work in cm and I need area in sqm, and this can't be done. Thank you anyway

    Daniel Moraes | March 28, 2018

    I had de same issue. In the lisp file, find de line %<\AcObjProp.16.2 Object(%<\_ObjId 681176416>%).Area \f "%lu2%pr2%ct8[1.000000000000000E-006]%th44">% e change de value 1.000000000000000E-006 to 0.0001. This changes de value of the Conversion Factor inside Field Additional Format to 0.0001. It Works.

    harinezumi 針鼠 | April 04, 2018

    Dear Daniel, thank you for yout work-around but I also use drawings in m and mm, so changing the lisp is not a solution for me

    Paul Li (Publisher) | June 10, 2021

    harinezumi, this feature has been added in version 4.0.0. Please download the latest and give it a try.

  • Bonne application
    AZZEDDINE ELHACHIMI | December 12, 2014 Verified Download (What's this?)

    Comment peut-on obtenir le AOL.lsp?

    Paul Li (Publisher) | October 04, 2021

    AOL.lsp can be downloaded here from the App Store. Click on the blue Download button located under Free on top right column.

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