NOW - Return the current date and time in the last modified field of the HTTP header. NONE - Leave the last modified field out of the header entirely. For example, assume you have a page with numerous sections of random content, but you have set NetCloak to return the file's modification date as the Last-Modified date of the HTTP header, by default. This will cause the browser to recognize the fact that the page is constantly changing, and perform caching appropriately. At first glance, this command may not seen to be useful, but there are several cases in which it can be handy.
Nothing is inserted into the text of the page being served.
The only effect is a system beep on the server. Another possible use for this command is in your server's error page. This can give you a warning of broken links on your site as they are happening. This causes the browser to immediately transfer to the URL specified. The redirect will not cause the redirected page to appear within the text of the original page.