BSCW keeps a log of every action on the object. How far back in time this log extends is determined by the BSCW administrators; they might regularly delete anything older than six months, e. g. to save storage space.
on the top button bar in the Info pageto bring up a list of the complete log of actions on the object -- as far back as available in the BSCW database.
The Info page shows your individual time window on this log: the part that is more recent than your last 
action covering the current object:
The Number of read events section shows the names of the users who have read or downloaded the object. Only the first access is mentioned for each user.
The Changes since <Date Time> section shows a list of modifications plus the names of the users who initiated the modifications.
The top button bar in the Info page also lets you move the "start" of the log time window forward to the present moment:
on the top button bar to indicate that you have taken note of the Events and do not want to be reminded of them any longer. The Info page will be displayed again, with no Events listed for the moment. Also, there will be no Event icons in the object's entry in a Folder page etc.
on the button bar for selected objects in a Folder page where this object is selected (checkmarked).