Lyons Sign LanguagePrint
Auvergne-Rhône-Alpes region: Lyons city.
None known. 405 km from Paris, but supposedly little intelligibility with French Sign Language [fsl].
Very little information about it is available. Survey needed to determine if it is still used, and if so, what is its relationship to French Sign Language [fsl]. Indeed, there is so little information, there is some question whether it ever existed.