> Anyway, is there any other URI scheme besides for mailto: that doesn't use
> <://>?
>
> Itıs optional for news:; news:comp.lang.perl is a valid URI for accessing that
> Usenet newsgroup via whatever your default news server is.
>
> There arenıt any slashes in the aim: scheme (not part of the IANA standard,
> but widely supported for accessing AOL-compatible IM clients from web
> browsers).
>
> There are no slashes in tel: (telephone numbers), though I donıt know what you
> could do with those from Perl. :)
>
> And Iım sure there are others. The syntax after the colon is pretty much
> arbitrarily determined by the scheme prefix, so a global constraint on it is a
> bad idea.
>
> -Mark
