>I think PI is not good solution. When I write style-sheet as PI,
>I can only one style-sheet type. And since PI has no attribute or
>notation, application can't recognize notaion of PI.
It depends on how the PI is designed. We could have a PI that looked like this:
<?stylesheet type="text/dsssl" href="style.dsl">
<?stylesheet type="text/css" href="style.css" title="A CSS style sheet">
James