In Section 3.8.

Replace:

SystemVerilog events can also have a persistent triggered state, that is, the synchronization object can be either ON or OFF.

With:

SystemVerilog events can also have a persistent triggered state that lasts for the duration of the entire time step.

Replace:

event variable_name [= initial_value];

With:

event [ bit ] variable_name [= initial_value];

Replace:

If an initial value is not specified then the variable is initialized to a new synchronization object whose triggered state is OFF.

If the event is assigned null, the event behaves as if it were permanently triggered (ON state).

With:

If an initial value is not specified then the variable is initialized to a new synchronization object.

The declaration event bit creates a persistent event (as described in Section 12.6.2).

If the event is assigned null, the event becomes non-blocking as if it were permanently triggered.

Examples:

event done; // declare a new event called done

event done_too = done; // declare done_too as alias to done

event bit blast; // persistent event

event bit empty = null; // persistent event variable