Strange font format

Anyone familiar with a font format with this suffix .AFN ?
This is an ArtCAM software Font format, used for CNC machines.
No more info from the customer as for now…

Any idea how to convert a font (ttf or otf) to this format

Do you happen to have one of those fonts? Maybe I can have a look.

Here it is: (305.6 KB)

I could not find any information on the font format. And ArtCAM is not supported any more. That means it might not be a good idea to invest too much time in it any more.

Thanks Georg. This helps a lot.