• Skip to main content
  • Skip to primary sidebar
  • Skip to footer
blog.draftsperson.net

blog.draftsperson.net

the art of technical drawing

blog.draftsperson.net

AutoCAD File Extensions – Section 3 Programming

August 1, 2004

Last updated July 29, 2026

A list of file extensions and what they are used for and what they mean.
Written by YZ, 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

Filed Under: AutoCAD Articles & Reference, AutoCAD Tutorials

Primary Sidebar

Subscribe to our Youtube Channel

Post CAD drafting jobs on Freelancer.com. and get some free money to do this.

Categories

  • American Steel Industry (4)
  • AutoCAD Articles & Reference (30)
  • AutoCAD Bugs & Problems (19)
  • AutoCAD Tips (29)
  • AutoCAD Tutorials (54)
  • AutoLISP Routines (328)
  • AutoLISP Tutorials (15)
  • CAD Standards (7)
  • Civil 3D (7)
  • Civil Drafting (4)
  • Dimensions (2)
  • Drafting Funnies (71)
  • Drafting History (9)
  • Drafting Standards (84)
  • Electrical Drafting (2)
  • General IT reference (7)
  • Geometry (15)
  • GIS (2)
  • Hatch Patterns (12)
  • Office Life Hacks (3)
  • PT (1)
  • Revit Tutorials (54)
  • Steel Detailing (14)
  • Structural Drafting (26)
  • Technical Dictionary (61)
  • Useful Website Links (19)

Footer

Free downloads

  • Free AutoLISP routines
  • Free hatch patterns
  • SHX fonts & text styles
  • Numbering LISP collection
  • ISO 3098B font

Reference charts

  • AWS weld symbols chart
  • Steel detailing chart
  • Hole & slot sizes
  • Bolt edge distance
  • ANSI & ARCH paper sizes
  • How to fold an A1 drawing

Useful links

  • CAD blocks (DWG)
  • Revit families
  • structuraldrafter.com
  • cad-corner.com
  • About
  • Privacy policy

Provided for free with no warranty · Log in