// Here is the format of the DATA for a TRef object in Release 3.02.06.
//--------
// 0->1 Version = Version of TObject Class (base class of TRef)
// 2->5 fUniqueID = Unique ID of referenced object. Typically, every referenced
// | object has an ID that is a positive integer set to a counter
// | of the number of referenced objects in the file, beginning at 1.
// | fUniqueID in the TRef object matches fUniqueID in the
// | referenced object.
// 6->9 fBits = A 32 bit mask containing status bits for the TRef object.
// | The bits relevant to ROOTIO are:
// | 0x00000008 - Other objects may need to be deleted when this one is.
// | 0x00000010 - Object is referenced by pointer to persistent object.
// | 0x01000000 - Object is on Heap.
// | 0x02000000 - Object has not been deleted.
// 10->11 pidf = An identifier of the TProcessID record for the process that wrote the
// | referenced object. This identifier is an unsigned short. The relevant
// | record has a name that is the string "ProcessID" concatenated with the
// | ASCII decimal representation of "pidf" (no leading zeros).
// | 0 is a valid pidf.
//-------