... Template webs were created to act as templates in creating webs. ... In the not so distant past TWiki webs were created by hand. ... A web that begins with an underscore "_" character is considered invisible and a template. All files in the _default (or any other web that begins with an underscore) template web will be copied into your new web. ... Simply create a web with an underscore for the first character. These can be used by authorized users to create webs from this template. ...