RE: MS-FO-LC1-032: Make collation URI a string literal

> 
> Class: Editorial/Technical
> 
> The collation argument should be a literal. Many current 
> implementation frameworks cannot easily deal with dynamically 
> provided collations. We can always remove this restriction in 
> a later version, but we cannot remove dynamic behaviour 
> without great difficulties once introduced.
> 				

It would be incredibly inconvenient to make users spell out the literal each
time it is used, rather than referring to a global variable.

In addition, XSLT 1.0 has shown that dynamic sorting capability is high on
users' requirements lists, and they are prepared to pay a heavy performance
penalty to achieve it.

Michael Kay