Middle field -1 in lab files created by XWaveLabelSerializer

[insa-k]

this issue is a follow up to this issue

Behavior

described in detail here

separator ;
nfields 1
#
     0.38 -1 _
     0.47 -1 n
     0.57 -1 A
...

TL;DR
The middle field -1 (added in XWaveLabelSerializer.java, ln. 135) affects other programs when working with these lab files.

The standard for Praat is a 26 there. Is there a specific reason for having a -1 instead of 26 which would imitate the Praat-approach?
This is the first time I've seen that the middle field of the lab file affects the behavior of another program but this might not be a singular problem.

[seblemaguer]

nop there is no specific reason. I was told that the middle field is basically unused normally. I'm not against changing it as soon as we know exactly what it corresponds to.