This section provides many useful references for programming the various different languages and methods of AutoCAD. You will not find any of the complex or advanced programming languages here. You will however find information that relates to customization in general for menus and script files.

ASCII Codes - The ASCII codes are values that allow for building some extended applications that require more than just letters and numbers for validation. The ASCII codes are mainly used for AutoLISP and VBA\VB programming.

DXF Codes - Is a listing the structure of objects so you can set and retrieve values through AutoLISP.  These values are used sometimes with VBA\VB and ObjectARX, but not very often due to these languages using object based coding styles.

Hyphen Commands - Is a listing of all the commands that have dialog boxes. This allows for a way of writing script files that use commands that have dialog boxes, since you can't call a dialog box from a script file and have it continue to execute the script file.

Transparent Commands - Is a listing of all the commands that can be used transparently inside of other commands. These commands are commands that can be run when other commands are active, such as Real-time Zoom and other Zoom commands.