X-ALT-DESC[;FMTTYPE=text/html:]

[joho1968]

It'd be nice if an ALTDESCRIPTION 'tag' could be parsed/read for VCALENDAR/VEVENT.

"X-ALT-DESC;FMTTYPE=text/html:"

Granted, it's an extension, but mentioned here: https://en.wikipedia.org/wiki/ICalendar

("X-ALT-DESC - Used to include HTML markup in an event's description. Standard DESCRIPTION tag should contain non-HTML version.")