http://ewkil.at/kalender.aspx
- kein Argument - dieser Hilfetext
q                 = del | cache | cachefull | set | ch | get 
out               = ics Ausgabe im iCalendar-Format
c                 = 1..9 Data-Channel
f                 = yyyy-mm-dd | yyyy-mm | yyyy 'from'
t                 = yyyy-mm-dd | yyyy-mm | yyyy 'to'
i                 = nn 'Id'