Params cannot carry descriptions in VOEvent 1.1

[Matthew Graham]

Hi,

Looking at the VOEvent 1.1 schema (I'm at a meeting and wanted something interesting to read), I note:

 <xs:complexType name="Param">
    <xs:attribute name="name" type="xs:token"/>
    <xs:attribute name="ucd" type="xs:token"/>
    <xs:attribute name="value" type="xs:string"/>
    <xs:attribute name="unit" type="xs:string"/>
  </xs:complexType>

This means that the example that Roy and I provided in our IVOA Note this week:

<Param name="Sun_Distance" value="132.21" unit="deg" ucd="pos.angDistance"> 
<Description>Angular distance from the sun to the event position</Description></Param>

is not actually possible, or, at least, will not validate. We need to change this for VOEvent 2.0!

	Cheers,

	Matthew
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