A list of file extensions and what they are used for and what they mean.
Written by Allan, Jan 2004
Fast loading AutoLISP file. Or a complied AutoLISP file. These types of files cannot be viewed with a text editor.
AutoLISP file. Can be viewed and edited with a text editor
Dialog Control Language description file. This can give AutoLISP files a nice dialog box that makes them easier to use.
ObjectARX. It is a programming environment and provides an object-oriented C++ application programming interface for the customization or extending of AutoCAD based products.
VBA. Visual Basic programming
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.
Visual List eXecutable