XML/XML Schema/length

xs:length defines a fixed length measured in number of characters or bytes (xs:hexBinary and xs:base64Binary)

   <source lang="xml">

<?xml version="1.0"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"

 targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru"
 elementFormDefault="qualified">

 <xs:simpleType name="standardNotations">
   <xs:restriction base="xs:NOTATION">
     <xs:length value="8" />
   </xs:restriction>
 </xs:simpleType>

</xs:schema>

</source>