\starttypescript[compagnon]
        \definefontsynonym[Compagnon-Light]
        [file:Compagnon-Light]
        \definefontsynonym[Compagnon-LightItalic]
        [file:Compagnon-LightItalic]
        \definefontsynonym[Compagnon-Bold]
        [file:Compagnon-Bold]
\stoptypescript

\starttypescript[compagnon]
        \setups[font:fallback:serif]
        \definefontsynonym[Serif]       [Compagnon-Light]
        [features=default]
        \definefontsynonym[SerifItalic]       [Compagnon-LightItalic]
        [features=default]
        \definefontsynonym[SerifBold]       [Compagnon-Bold]
        [features=default]
\stoptypescript

\starttypescript[compagnon]
        \definetypeface[compagnon] [rm] [serif] [compagnon] [default]

\stoptypescript