How to distinguish UTF-8 from Latin-* ?

Hi,

How can we distinguish the UTF-8 characters sequence from a 
Latin-1/Latin-? characters. In case of most of the internet application 
UTF16 characters are prefixed by "0xu" and for the UTF8 characters there 
is no prefix to identify those. Do we HAVE/NEED a standard to represent 
UTF8 ?

For example, if the browser send out a http GET request for a non-Roman 
characters with out the header information, the server application will 
not be able to identify the characters whether they are UTF8 or Latin-1.


-Vinod

vinod@filemaker.com