Recurrence in Google Calendar

Outlook clearly has richer support of the RECUR type.  But Google is not a
subset of Outlook.  They differ in how they use set position.  Outlook uses
the SETPOS (field,attribute,?), while Google prefixes the day of the week
with a set position (ie BYDAY=1SU).

I couldn't find a way to schedule floating times.

Every recurrence rule can use UNTIL, but not COUNT.

FREQ is limited to DAILY, WEEKLY, MONTHLY and YEARLY.

DAILY can only be: INTERVAL=n

WEEKLY options: 
	BYDAY=days
	Or
	INTERVAL=n;BYDAY=days

MONTHLY options:
	INTERVAL=n;BYMONTHDAY=<one positive value>
	Or
	INTERVAL=n;BYDAY=<setpos><day of week>

YEARLY options:
	In VEVENT - no other rules, just DTSTART and DTEND
	In VTIMEZONE - BYMONTH=month;BYDAY=<setpos><day of week>

Aaron