No sorry perhaps i wasnt clear enough. I meant if people design a proper enterprise website they would split off display of the page from the business logic layer and then have a data abstraction layer for accessing the database. I am talking about the display layer. I just wondered how people would usually design this, would they build the page up as the business logic layer progresses and then output that page at the end? For example somewhere along the line in the business logic layer you may decide you need a page redirect at which point you would output a header statement and enever both about displaying any html but until you have completed all your logic you arent going to know that.