Meanwhile, over in digital photography land, the debate over RAW file formats is heating up. Here's how a recent press release starts out:
The American Society of Media Photographers is deeply concerned at the developing crisis that is threatening continued access to the world’s photographic heritage.
The RAW format is fast becoming the standard for professional and other serious imaging. Encryption and the abandonment and termination of support for older RAW formats put in jeopardy the future use of many digital photographs.
If you find it hard to imagine not being able to access CAD drawings 20 years in the future, perhaps it might be easier to visualize not being able to view the pictures you took with you camera today. While the customer has responsibility to speak up over access to their designs, it is the the CAD vendors (controlling the format of the designs) who need to take seriously the achival problem created by digital drafting.
More at Imaging Resource.