[NUT-devel] back_ptr description unclear

[Clemens Ladisch]

nut.txt says:
| back_ptr_div16 (v)
|     back_ptr = back_ptr_div16 * 16 + 15
|     back_ptr must point to a position within 16 bytes of a syncpoint
|     startcode. [...]

Does "within 16 bytes" mean before or after the syncpoint startcode?
This description also doesn't mention that this value is relative.

I think the semantics were intended to be similar to syncpoint_pos_div16
in the index, so probably that description can be copied and adapted:

| syncpoint_pos_div16 (v)
|     offset from beginning of file to up to 15 bytes before the syncpoint
|     referred to in this index entry. Relative to position of last
|     syncpoint.


Regards,
Clemens