Defines Web documents. Includes the following file types Xml./webfiletype/xmlJson./webfiletype/jsonHtml./webfiletype/htmlHtm./webfiletype/htmMht./webfiletype/MhtMhtml./webfiletype/MhtmlChm./webfiletype/chm...file types: Xml Json Html Htm Mht Mhtml Chm public sealed class...format here . static readonly Mht Files with MHTML extension represent...