: The (command ...) function allows a routine to execute standard AutoCAD commands just as a user would type them.
: To create a custom command that can be typed into the AutoCAD command line, use the defun function with a C: prefix. For instance, (defun C:HELLO () (prompt "\nHello World!")) defines a new command called HELLO . AutoLISP in AutoCAD
: Functions like getpoint , getreal , and getstring pause the routine to ask the user for specific data. : The (command
: You can read or change AutoCAD settings using getvar and setvar . How to Load and Use AutoLISP Files COMPREHENSIVE GUIDE TO LISP ROUTINES? - Forums, Autodesk AutoLISP in AutoCAD