Blackberry 850 User Manual page 91

Using the calendar — Switching views 91
Press the key while rolling the trackwheel to scroll horizontally
ALT
through the appointments.
Month view
When you first switch to Month view, your cursor will be on today's
date and you can scroll horizontally through the days of the month.
Days with appointments have a black bar to the left of the day. The
size of the bar depends on the length of the appointment. For
example, a one-hour appointment will have a short bar, while a
four-hour appointment will have a long bar. If the appointment is
an all-day appointment, the day will be in bold text. The position of
the bar depends on the start time set for the appointment. For
example, the bar for afternoon appointments will typically appear
near the bottom of the date.
Handheld User's Guide