[Content_Header] returns a reference to the current header that is being assembled by Lasso for return to the client. The header must be a valid HTTP header separated by \r\n pairs. Lasso does not enforce proper formatting of the header so if modifications are made care should be taken to adhere to the proper HTTP standards.

Called simply the [Content_Header] tag returns the current header. If called with a parameter the header is replaced with that new value [Content_Header('new value')]. A new value can also be assigned to or appended to the content headers.