When I click on preview, I get to see how will the page look.How does the preview function work ? When I click on the preview whats the mechanism that previews that page ? When I click on preview button, does it trigger an http request for the page to IIS or Apache ? So when I create a page does it automatically get stored in a directory in IIS or Apache ? How does the IIS or Apache map the request to this page ?Pls exlain.