For Wikipedia , the User , Talk , and Wikipedia namespaces have subpages turned on ; the main ( article ) namespace does not have this feature turned on , as strictly hierarchical organization of articles is discouraged , and other distinctions are better made by placing pages in other namespaces ( e.g. discussions go in `` Talk : '' , and templates in `` Template : '' ) . The main ( article ) namespace does not have this feature turned on , as strictly hierarchical organization of articles is discouraged , and other distinctions are better made by placing pages in other namespaces ( e.g. discussions go in `` Talk : '' , and templates in `` Template : '' ) .