[DDI-SRG] DDI bug 225 - need your advise

[Wendy Thomas]

Hi Herve,

We have a DDI bug that requests an extension of ExternalAid (in 
QuestionItem) to include two attributes @start and @stop both 0..1 
type="xs:float"

The purpose of the added attributes is to indicate start and stop points 
in audio, video, and multimedia aids where only a segment will be played 
for the specified question or question part. We have agreed this is 
needed but also think we will need additional information like the 
measurement unit of the stop and start attributes.

Currently ExternalAid is type="r:OtherMaterial"
We are changing it to a complex type which is an extension of 
r:OtherMatial by adding

 	attribute name="start" type="xs:float"     minOccurs="0"
 	attribute name="stop" type="xs:float"     minOccurs="0"
 	description: Use to indicate the internal start and stop point for 
audio, visual, or multimedia materials. If an @start but no @stop is 
provided this indicates a mid point start and running to the end of the 
content. If an @stop but no @start is provided this indicates a start at 
the beginning and running until the mid-point stop indicated. If these 
attributes are not used the ExternalAid should be run in its entirety."

What else do with need in order to capture information needed to make this 
operational?

Thanks for you help.
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Wendy

Wendy L. Thomas                          Phone: +1 612.624.4389
Data Access Core Director		 Fax:   +1 612.626.8375
Minnesota Population Center              Email: wlt at pop.umn.edu
University of Minnesota
50 Willey Hall
225 19th Avenue South
Minneapolis, MN 55455