\def\batchfile{jsclasses.ins}
\input docstrip.tex
\keepsilent
\generateFile{jsarticle.cls}{f}{\from{jsclasses.dtx}{article}}
\generateFile{jsbook.cls}{f}{\from{jsclasses.dtx}{book}}
\generateFile{jspf.cls}{f}{\from{jsclasses.dtx}{jspf}}
