The 'whiteSpace' element controls the processing of whitespace according to these values:

• preserve - all whitespace is preserved.

• replace - replaces tabs, line feeds, and carriage returns with spaces.

• collapse - removes trailing and leading spaces and replaces multiple whitespace characters with a single space.

Ensuring a type name doesn't have whitespace:

<xs:simpleType name="TypeName">
   <xs:restriction base="xs:string">
      <xs:whiteSpace value="collapse"/>
   </xs:restriction>
</xs:simpleType>