BEGIN:VCALENDAR
SOURCE;VALUE=URI:http://calendar.example.com/event_with_html.ics
BEGIN:VEVENT
UID: 2371c2d9-a136-43b0-bba3-f6ab249ad46e
SUMMARY:What a nice present: 🎁
DTSTART;TZID=America/New_York:20190221T170000
DTEND;TZID=America/New_York:20190221T180000
LOCATION:Germany
DESCRIPTION:<html><body><h1>Title</h1><p><ul><li><b>first</b> Row
</li><li><i>second</i> Row</li></ul></p></body></html>
END:VEVENT
END:VCALENDAR