rendering. If you write a standard controller that only calls C<render> once, it
will just work. In case the header is generated in a different render call
(multiple blocks, ajax, old C<bin/mozilla> style controllers) you need to
rendering. If you write a standard controller that only calls C<render> once, it
will just work. In case the header is generated in a different render call
(multiple blocks, ajax, old C<bin/mozilla> style controllers) you need to