attributeGroup  msup.attlist  
version  
namespace http://www.w3.org/1998/Math/MathML
used by
complexType     {http://www.w3.org/1998/Math/MathML}:msup.type 
attributes
Name   Type   Use   Default   Fixed   annotation
superscriptshift    length-with-unit                
class    xsd:NMTOKENS                
style    xsd:string                
xref    xsd:IDREF                
id    xsd:ID                
xlink:href    xsd:anyURI                
source <xsd:attributeGroup  name="msup.attlist">
<xsd:attribute  name="superscriptshift"  type="length-with-unit">
</xsd:attribute> <xsd:attributeGroup  ref="Common.attrib">
</xsd:attributeGroup>
</xsd:attributeGroup>


attribute  msup.attlist/@superscriptshift  
type length-with-unit 
source <xsd:attribute  name="superscriptshift"  type="length-with-unit"/>