Persistent
When selected, this check box indicates that the variable's value is to be passed on to
subsequent event handlers in the sequence, except those which refer to an initial state that
contains the same variable, in which case that initial state's value is used for that handler.
When cleared, the variable's value is reset by each succeeding event handler that uses it.
Note: This option is available only for synchronous event handlers. This
setting does, however, affect any asynchronous event handlers that intervene in
the sequence.
On the Event Handler Status form, this field is read-only.