BPMN21 — None Events for Intermediate Events: Not clear wether it should be throw or catch

Hi,
For none events there a two differing descriptions in the specification:

Page 271:
"None Events are Events that do not have a defined EventDefinition. There are three (3) variations of None Events: a Start Event, a catch Intermediate Event, and an End Event (see Figure 10.91) The catch None Intermediate Event MUST only be used in normal flow and, thus, MAY NOT be attached to the boundary of an Activity."

On Page 250 it is written:
"The None Intermediate Event is only valid in normal flow, i.e., it MAY NOT be used on the boundary of an Activity. Although there is no specific trigger for this Event, it is defined as throw Event. It is used for modeling methodologies that use Events to indicate some change of state in the Process."

So are the none events for intermediate events throwing or catching? Please clear this up.