How to Load Lisp in AutoCAD LT 2021?

Loading LISP Files in AutoCAD LT 2021

AutoCAD LT is a powerful tool for 2D drafting, but to enhance its functionalities, you may want to load LISP files. This process enables you to automate repetitive tasks and introduce custom commands. Here’s how to do it step by step.

Step 1: Open the CUI Dialog

Begin by launching AutoCAD LT and typing CUI into the command line. Press Enter. This command opens the Customize User Interface (CUI) dialog, where you can manage various configurations related to your AutoCAD environment.

Step 2: Locate the LISP Files Category

In the CUI dialog, navigate to the "Customization" section on the left panel. Look for the option labeled "LISP Files" found under the "All Files" category.

Step 3: Load the LISP File

1. Right-click on the "LISP Files" category: In the context menu that appears, click on “Load LISP.”
2. Browse your files: A file explorer window will open. Here, navigate to the directory where your LISP file is stored. Select the desired LISP file.
3. Add to the list: Once selected, the LISP file will be added to the list within the CUI dialog.

Step 4: Save Your Changes

After successfully loading the LISP file, ensure to save your changes in the CUI editor. Click on “Apply” and then “Close” to exit the editor.

Using the Loaded LISP File

To run the LISP routines you’ve just loaded, follow these steps:

1. Enter the command: Type the name of the loaded LISP routine into the command line and press Enter.
2. Execute functions: Follow any prompts that may appear, depending on the function of the LISP routine you are using.

Checking for Successful Loading

To confirm that your LISP routines are successfully loaded:

• You can run the APPLOAD command, which shows applications currently loaded. If your LISP file appears in this list, it indicates that the loading was successful.

FAQs

1. Can AutoCAD LT execute LISP routines?
AutoCAD LT does not support AutoLISP routines, as its primary design is focused on 2D drafting without some of the automation features available in the full version of AutoCAD.

2. What file format do LISP files use?
LISP source files are typically saved with a .lsp extension, while compiled files use the .fas extension.

3. What is the primary difference between AutoCAD and AutoCAD LT?
AutoCAD supports both 2D and 3D drafting capabilities along with automation through programming, whereas AutoCAD LT focuses on 2D drafting and lacks some advanced features, making it a more budget-friendly option.