A table of Embedded Event Manager events generated by this
router. Conceptual row entries are dynamically added into
this table when Embedded Event Manager events occur.
Entries are stored in FIFO order. When the maximum number
of entries has been reached in the table, the oldest entry
in the table is removed immediately.
When a table is reduced to a smaller size N, the oldest
entries are immediately removed from the table leaving
a maximum of N entries.