I am a GIS guy and I occasionally work with CAD files as well. Now I need to know how I can define a coordinate system and a geographic transformation for a CAD Drawing. According to ESRI:
"You can define a coordinate system and a geographic transformation and create and edit metadata for CAD datasets. The information is stored in external support files and moves with the CAD dataset when it is managed in the Catalog window."
But don't know how to do this! Can you please let me know or point me to a tutorial to understand this?