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Between 1999 and 2017, Tehnif Software worked in partnership with Chicago Stage Equipment Co. Inc. DBA Design & Drafting. We combined lighting, sound, video, set design and event planning into an ALL-IN-ONE CAD program - LD Assistant. For many years, CAD-N-LIGHTING.com website served as LD Assistant user's community, a place where lighting designers exhibited their work, where users stayed in contact each other and with LD Assistant software development team. Today, if your activity has a connection with 2D Drafting, 3D Modeling, Lighting Design, Audio & Video, Event Planning, Rendering & Animation, Visualization & DMX Control, LD Assistant or CAD, is good to know that CAD-N-LIGHTING.com remains a place where you can keep in touch with people who share the same passions.


LD Assistant is a powerful lighting design and event planning software that has been used by thousands worldwide to augment their creative workflow ... The advanced design tools found in LD Assistant will remain viable for the next decade ... I’m incredibly proud of what we’ve achieved with LD Assistant through the years, and truly grateful to our core user base. There are many LD Assistant power users that have achieved results I didn’t imagine possible.
— Rufus Warren, Founder/CEO of Design & Drafting


In May 2017, Chicago Stage Equipment Co. Inc. DBA Design & Drafting, announced the ceasing of all further development of LD Assistant lighting design software. View PLSN announcement

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