-echo -n "Content-Type: text/calendar;charset=utf-8\n\n"
-course="${_GET[course]}"
-cat "$_DATA/ical/$course"
+course="$(GET course |PATH)"
+coursefile="$_DATA/ical/${course##*/}"
+
+. $_EXEC/pdiread.sh
+. $_EXEC/cgilite/file.sh
+
+printf 'Content-Disposition: inline; filename="%s.ics"\r\n' "$(pdi_value "$(pdi_load "$coursefile")" SUMMARY)"
+
+FILE "$coursefile" "text/calendar; charset=utf-8"