GDM file extension

Bells, whistles, and sound boards module

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A .GDM file is known as a Bells, whistles, and sound boards module.

This file extension was added to our database by a visitor to this site, but no further information was provided. We have yet to investigate the GDM file extension any further, or there was simply not enough information available at the time to report accurately on this format.

However, it is possible that other file formats exist that use the GDM extension, so please let us know if you do not think this extension matches the file format you are looking for.