(Required if RF is present; PDF 1.3; amended to include the UF key in PDF 1.7) A dictionary containing a subset of the keys F, UF, DOS, Mac, and Unix, corresponding to the entries by those names in the file specification dictionary. The value of each such key is an embedded file stream (see Section 3.10.3, “Embedded File Streams”) containing the corresponding file. If this entry is present, the Type entry is required and the file specification dictionary must be indirectly referenced. (See implementation note 46in Appendix H.) Note: It is recommended that the F and UF entries be used in place of the DOS, Mac, or Unix entries.

public const string EF

Public Const EF As String

public:
literal String^ EF