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AutoCAD

• 61
• PRO Menu
• Menu utilities and interface enhancements for recent AutoCAD versions.

• 62
• AutoCAD LISP 2000
• Some practical and annotated AutoLISP programming examples and related links in English and Spanish.

• 63
• Vladimir Nesterovsky's
• A collection of tricky AutoLISP routines and related tools, as well as explanations of some advanced language features.

• 64
• VB CAD
• VBA related services for AutoCAD, along with tips and tricks, and some free code examples.

• 65
• VBA example code for AutoCAD and IntelliCAD
• A collection of VBA example programs for AutoCAD with source code to download.

• 66
• AEC Design Group
• Develops and distributes AutoCAD-based software for the process plant and building services industries worldwide.

• 67
• PRO-CAD Software Ltd.
• Developers of 2D Designer and 3D Smart piping and electrical drafting and design software add-on programs for AutoCAD.

• 68
• Strucsoft Inc.
• Plant design software for mechanical, structural, instrumentation and electrical design.