2012

Table Of Contents
Quick Reference
Commands
VLISP
Displays the Visual LISP interactive development environment.
System Variables
PICKADD
Controls whether subsequent selections replace the current selection set or
add to it.
PICKAUTO
Controls automatic windowing for object selection.
Use AutoLISP Applications
See also:
Overview of File Organization on page 4
AutoLISP applications are stored in ASCII text files that you can edit. Before
you can use an AutoLISP application, it must first be loaded.
AutoLISP applications are stored in ASCII text files with the .lsp extension.
These files generally have a header portion that describes a routine, its use,
and any specific instructions. This header might also include comments that
document the author and the legal information regarding the use of the
routine. Comments are preceded by a semicolon (;). You can view and edit
these files with a text editor or word processor that can produce an ASCII text
file.
Before you can use an AutoLISP application, it must first be loaded. You can
use the APPLOAD command or the AutoLISP load function to load an
application. Loading an AutoLISP application loads the AutoLISP code from
the LSP file into your system's memory.
Loading an application with the load function involves entering AutoLISP
code at the command prompt. If the load function is successful, it displays
the value of the last expression in the file at the command prompt. This is
usually the name of the last function defined in the file or instructions on
using the newly loaded function. If load fails, it returns an AutoLISP error
Use AutoLISP Applications | 435