A general-purpose result buffer (resbuf) structure handles all of the AutoCAD data types. Type codes are defined to specify the data types in a result buffer.
- Customization Guide
 - DXF Reference
 - AutoLISP and DCL
 - ObjectARX
- ObjectARX: Developer's Guide
- ObjectARX Introductory Concepts
 - Basic Interaction with AutoCAD
- Selection Set, Entity, and Symbol Table Functions
 - Plot API
 - Global Functions for Interacting with AutoCAD
 - ObjectARX Global Utility Functions
 - AutoCAD Command Prompt Standard
 
 - Custom Objects
 - Advanced Topics
 - ObjectARX Graphics, Geometry, and Boundary Representation Libraries
 
 - ObjectARX: Reference Guide
 - ObjectARX: Release Notes
 
 - ObjectARX: Developer's Guide