You can choose a set of templates saved in your sandbox space by using an appropriate sandbox prefix. For example, if you want to preview a version of வார்ப்புரு:Test that you have saved as "பயனர்:Foo/மணல்தொட்டி/வார்ப்புரு:Test", use "பயனர்:Foo/மணல்தொட்டி" as the prefix.