How does Jet Replication work?

From Jet Replication Wiki -- Microsoft Office Access Replication

Jet Replication is a technology that allows the edits, additions and deletions in multiple Jet data files to be synchronized. Jet Replication works by adding fields to all the replicated tables in a Jet MDB that track the changes that have been made. A synchronization then evaluates the data in those fields to determine how to merge the changes in the MDB files being synchronized.