The GenCAD export option is an interface which writes an ASCII text file in GenCAD format. Pre-formatted to an exact specification, this format is reliable and proven in the industry.
You can include Component Values from components as 'ATTRIBUTE' entries in the output file.
Additionally, you can also use the Value in-place of the 'Compname' field in the output. This allows you to use a value on your component instead of the actual Component reference name.