Further explain events.

The underlying problem is that the chapter had only considered clocking purely continuous-time models.

This tries to have somewhat well-defined behaviour in other cases.

chapters/synchronous.tex

@@ -1057,9 +1057,11 @@ \section{Continuous-Time Equations in Clocked Partitions}\label{continuous-time-
 \end{nonnormative}
 
 \begin{nonnormative}
-It is not defined, how events are handled that appear when solving the continuous-time partition. For example, a tool could handle events exactly in the same way as for a usual
-simulation.  Alternatively, relations might be interpreted literally, so that events are no longer triggered (in order that the time for an integration step is always the same,
-as needed for hard real-time requirements).
+It is not defined, how events are handled that appear when solving the continuous-time partition.
+For example, a tool could handle events in the same way as for a usual simulation - but only check them at the time associated with clock-ticks.
+
+Alternatively, relations might be interpreted literally, so that events are no longer triggered (in order that the time for an integration step is always the same, as needed for hard real-time requirements).
+However, even if relations do not generate events, when-clauses and operators \lstinline!edge! and \lstinline!change! should behave as normal.
 \end{nonnormative}
 
 From the view of the clocked partition, the continuous-time