1 text/html; lynx -stdin -dump -force_html ; copiousoutput
2 application/pdf; mupdf %s;
3 application/vnd.openxmlformats-officedocument.wordprocessingml.document; libreoffice %s;
4 application/vnd.openxmlformats-officedocument.presentationml.presentation; libreoffice %s;
5 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet; libreoffice %s;
6 application/vnd.oasis.opendocument.spreadsheet; libreoffice %s;