1 As usual for ViewForum burnt CDROMs, the Endianness switches from Little Endian
2 to Big Endian, and then back to Little Endian within an 'Explicit VR'
3 private DICOM Sequence (the length of which is *not* 0xffffffff).
4 The heuristics to guess the endianness looking at the 'delimitors' works.
5 There are a lot a 'Private Sequences'.
6 Bad luck for us : there are Implicit VR, we cannot guess it's a Sequence...
7 We have to backtrack when an Item Starter is found 'out of' any SQItem.