\startregime[latin1]

\defineactivecharacter ä {\"a} 
\defineactivecharacter Ä {\"A}
\defineactivecharacter ö {\"o}
\defineactivecharacter Ö {\"O} 
\defineactivecharacter ü {\"u}  
\defineactivecharacter Ü {\"U} 
\defineactivecharacter ß {\"SS} 
\stopregime

\endinput