AutoCAD

AutoCAD and related file format extension index

Section 3 - Programming

A list of file extensions and what they are used for
Written by Allan, Jan 2004

.FAS

Fast loading AutoLISP file. Or a complied AutoLISP file. These types of files cannot be viewed with a text editor.

.LSP

AutoLISP file. Can be viewed and edited with a text editor

.DCL

Dialog Control Language description file. This can give AutoLISP files a nice dialog box that makes them easier to use.

.ARX

ObjectARX. It is a programming environment and provides an object-oriented C++ application programming interface for the customization or extending of AutoCAD based products.

.DVB

VBA. Visual Basic programming

.DBX

ObjectDBX. It is a software library that allows developers to access, read and write AutoCAD .dwg files and intelligent object databases. This type of file does not need AutoCAD present to create or edit .dwg files.

.VLX

Visual List eXecutable