Give us a property to specify any http header and value ("expires" for instance) for the Domino server to append to the http response. Make this property available in every design element.
@SetHTTPHeader only really works in the context of forms and pages.
I know this can be ...
While developing XPages or Web application in designer, we cannot test applications for authenticated users. We need a server footprint for testing those applications.
Local HTTP preview process has to be modified to support some kind of authentication (it may even be a text file for test users).