Updated for AutoCAD 2011. Learn to program with Visual LISP, the enhanced AutoLISP programming environment for Autodesk(R) AutoCAD-based products. This book covers beginner to intermediate programming techniques, and provides a thorough reference of the Visual LISP and DCL languages as well as the VLIDE. Everything from functions, to projects and namespaces, reactors and dialog callbacks. This edition includes expanded topics, coverage of additional VL- functions, an expanded Appendix, new examples, including WMI/WBEM, MS ScriptControl, Microsoft Office 2010 interfacing, and more.