Thank you. I have added the following items:
{appt-subject}
{appt-notes}
{appt-location}
{appt-start}
{appt-end}
Can we have {appt-startdate}, {appt-starttime}, {appt-enddate}, {appt-endtime}? I feel date is not so useful sometimes. It will be good if we can have {appt-duration}, so that I can just include it in SMS to tell caller how long time the caller has to waiting.