Name
pdf — An encoded PDF document
Description
   A pdf element contains a single PDF document, encoded in
   a printable format.  The precise encoding format is specified by the
   encoding attribute (see below).
  
   Whitespace and line breaks within this element are not relevant and
   can be ignored.
  
Children
    Element pdf has no children.
   
Attributes
- encoding
- 
      Specifies how the binary PDF document is encoded in printable
      format.  Possible values are - base64(indicating
      a base64 encoding with printable character
      set- A-Za-z0-9+/), or- null(indicating that the PDF document is empty, i.e., a zero-byte file).