Issue 17847: What is a DurationInterval (uml25-ftf)
Source: Nomos Software (Dr. Edward Willink, ed(at)willink.me.uk)
Nature: Clarification
Severity: Significant
Summary: Identifies is better than points out. 

Subsequent description is confusing about one/two NamedElements.

Suggest:

It identifies either a NamedElement whose enter and exit events are observed, or a pair of NamedElements for each of which either an enter or exit event is observed.
...
When there are two events, firstEvent[i] is true to select the enter, or false to select the exit, event for observation of the corresponding event. ---

Resolution: 
Revised Text: 
Actions taken:
September 26, 2012: received issue
Discussion: 

End of Annotations:=====
everity: Medium
Type: Clarification
Location: 8.6 p 88 DurationInterval
Title: What is a DurationInterval
Description:

Identifies is better than points out. 

Subsequent description is confusing about one/two NamedElements.

Suggest:

It identifies either a NamedElement whose enter and exit events are observed, or a pair of NamedElements for each of which either an enter or exit event is observed.
...
When there are two events, firstEvent[i] is true to select the enter, or false to select the exit, event for observation of the corresponding event. ---
Source: Edward Willink