... The TWikiTemplates files used for skins are located in the twiki/templates directory and are named according to the skin: <scriptname>.<skin>.tmpl . ... You should only need to copy the files you intend to customise, as TWiki can be configured to fall back to another skin if a template is not defined in your skin. ... If a skin doesn't define its own version of a template file, then TWiki will fall back to the next skin in the skin path, or finally, to the default version of the template file. ...