http://www.w3.org/1999/xhtml
simpleType Number

Super Types

{http://www.w3.org/2001/XMLSchema}nonNegativeInteger
  |
  +--{http://www.w3.org/1999/xhtml}Number (restriction)

Documentation

      one or more digits
      

Sub Types

{http://www.w3.org/1999/xhtml}Number (restriction)
  |  
  +--{http://www.w3.org/1999/xhtml}tabindexNumber (restriction)

Source

<xs:simpleType name="Number">
  <xs:restriction base="xs:nonNegativeInteger">
    <xs:pattern value="[0-9]+"/>
  </xs:restriction>
</xs:simpleType>