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This allows you to change the response completely while generating an other
one, which is extremely useful if your code decides to throw an error while a
part of the response has already been generated. In such a case your visitor
will properly see your error page and not some messed up page that does not
make sense. Thanks to this buffering, you will also be able to set cookies and
send other headers B<after> generating the contents of the page.  And as an
added bonus, your pages will be compressed more efficiently when output
compression is enabled.

On the other hand, this means that you can't use TUWF for applications that
require Websockets or other forms of streaming dynamic content (e.g. a chat
application), and you may get into memory issues when sending large files.

=item Everything is UTF-8.

All TUWF functions (with some exceptions) will only accept and return Unicode
strings in Perls native encoding. All incoming data is assumed to be encoded in
UTF-8 and all outgoing data will be encoded in UTF-8. This is generally what
you want when developing new applications. If, for some very strange reason,
you want all I/O with the browser to be in anything other than UTF-8, you won't
be able to use TUWF. It B<is> possible to use external resources which use