AutoCAD

How to Unload Lisp in AutoCAD?

Steps to Unload a Lisp File in AutoCAD

When working with AutoCAD, you may find the need to unload a Lisp file that you previously loaded into your workspace. This process helps maintain the efficiency of your AutoCAD environment by removing scripts that are no longer necessary. Follow these step-by-step instructions to successfully unload Lisp files in AutoCAD 2025.

Step 1: Access the Application Loader

Begin by typing APPLOAD into the AutoCAD command line. This command activates the Load/Unload Applications dialog, which allows you to manage your loaded Lisp routines efficiently.

Step 2: Navigate to Loaded Applications

Once the Load/Unload Applications dialog appears, look for the tab labeled "Loaded Applications." This section displays a list of all currently loaded Lisp routines and applications.

Step 3: Identify the Lisp to Unload

Scroll through the list to find the specific Lisp file that you wish to unload. The names of loaded applications will indicate their purpose or functionality. Make sure you select the correct file to avoid affecting other functions.

Step 4: Unload the Selected Lisp

With the desired Lisp file highlighted, look for an option to "Unload" or "Remove." Click this button to deactivate the selected Lisp routine. This action will free up resources in your AutoCAD session, ensuring a smoother workflow.

Step 5: Confirm and Close

After unloading the Lisp, it’s good practice to review the remaining loaded applications to confirm that the unwanted file has been removed. Once you’ve checked everything, close the Load/Unload Applications dialog to return to your drawing space.

Understanding Lisp Routines

Lisp routines enhance the capabilities of AutoCAD by automating various tasks that are not built into the software. While they provide significant productivity benefits, managing them properly is vital to ensure the application operates without issues.

Frequently Asked Questions

1. Can I unload multiple Lisp files at once in AutoCAD?
No, AutoCAD allows you to unload only one Lisp file at a time using the Load/Unload Applications dialog. However, you can repeat the unload step for each file as needed.

2. What should I do if a Lisp file does not appear in the Loaded Applications list?
If a Lisp file is not listed, it means it has not been loaded in the current session. Ensure that you have loaded the file using the APPLOAD command before attempting to unload it.

3. Does unloading a Lisp routine delete it from my computer?
No, unloading a Lisp routine simply removes it from the current session of AutoCAD. The file remains intact on your system, and you can reload it anytime using the APPLOAD command.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.