AutoLISP source code files can be created and opened for edit in Visual LISP. 
Note: The Visual LISP Editor is available on Windows only. 
Create a new source code file 
 
   
  -  At the AutoCAD Command prompt, enter 
		vlide. 
	 
 
- In Visual LISP, click File 
 New File. 
	  
- Click File 
 Save As. 
	  
- In the Save-as dialog box, click the Save As Type drop-down list and select Lisp Source Files. 
	 
 
- Specify a location for the LSP file and enter a name in the File Name box. Click Save. 
	 
 
 
 
Open an existing source code file
 
   
  - At the AutoCAD Command prompt, enter 
		vlide. 
	 
 
- In Visual LISP, click File 
 Open. 
	  
- In the Open File to Edit/View dialog box, browse to and select the LSP file to open. Click Open.