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 ढाँचा:Test that you have saved as "प्रयोगकर्ता:Foo/मेरो प्रयोगस्थल/ढाँचा:Test", use "प्रयोगकर्ता:Foo/मेरो प्रयोगस्थल" as the prefix.