| Where the old templates were each complete HTML documents, the new templates are defined using variables to include template parts from a master file. You can now change one instance of a common element to update all occurrences; previously, every affected template had to be updated. This simplifies the conversion of templates into XHTML format, and provides a more versatile solution for templates and for TWikiSkins . The new system: * Templates and TWikiSkins  work transparently and interchangeably. For example, you can create a skin that overloads only the =twiki.tmpl= master template, like =twiki.print.tmpl=, that redefines the header and footer.
 
  *NOTE:* TWikiSkins  can be defined to overload the standard templates. 
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