DPM Gaiters -- How to use the six grommets correctly?

[Erbswurst]

I recently bought British Army DPM Gaiters, I think the younger model.

There are 6 grommets, 3 on each side of each gaiter, that are obviously meant to pull a cord through that goes under the sole.

Are 4 grommets meant as a spare?
Is that for adjustments?
Do you use all 6 with special knots in order to lower the tension on the single grommet?

What was taught in the British army about these?

Gaiters, GS, MK2
NSN 8440-99-132-9833
Size: Standard (To fit boots 4 to 12)
DC1aESL/0369
2007

 

[SCOMAN]

Any pics?

 

[Lean'n'mean]

Because they fit boots from 4- 12, the grommets allow you to adjust the paracord (which acts as an instep strap) according to the position of the heel block.

 

[Erbswurst]

Thank you very much!

I have no idea how to post photos here.
There are simply 3 little grommets in line at each side of the gaiter.

 

[Lean'n'mean]

I have no idea how to post photos here.
There are simply 3 little grommets in line at each side of the gaiter.

Like this.

 

[Erbswurst]

Do you set one cord between both sides or do you use two cords and put them together above the foot, approximately like it was done with the steel string version?