It is for AutoCAD that enable insert windows and doors by a 2 line entity.
Editor: This new product is offered free of charge as a show-case product of ObjectDCL technology and DuctiSofts expertise.

It is a simple utility for AutoCAD that enable users to insert Windows and Doors by selecting only a 2-lines entity. Easy to use, you can now insert a wide range of architectural door and window blocks FASTER than ever. The utility trims wall lines and let you MOVE and stretch any inserted component.

WinDoor is entirely made in LISP scripting language and use ObjectDCL technology for great looking dialogs. you can free download WinDoor 2009 1.01 now.