4982 FictionBook eBook 2 Text (Structured) FictionBook 2 is an xml-based ebook format. Preservica / Preservica 02/09/2026 02/09/2026 fmt/2106 PUID MIME fb2 File extension 4471 FictionBook eBook v.2 BOF: XML declaration, then '<FictionBook' element including namespace reference 'xmlns=("|')http://www.gribuser.ru/xml/fictionbook/2.0("|')' 4865 Absolute from BOF 0 0 3C3F786D6C2076657273696F6E3D(22|27)312E30(22|27){1-1024}3C46696374696F6E426F6F6B{1-256}786D6C6E733D(22|27)687474703A2F2F7777772E67726962757365722E72752F786D6C2F66696374696F6E626F6F6B2F322E30(22|27) Has priority over 638 Extensible Markup Language