Note the interface is just a stylistically unfolded Eva. It labels the various areas and the two sides are mirrored and labled accordingly (Left L and Right R)
Using all the above pics you can read pretty much all the parts from the Knee up.
It's sylized so the head is somehow in the crotch
From there outwards: Neck
Branching outwards and down: Knee (plus whatever is never seen on screen)
Branching up: Vertebra, Abdomen, Scapula
Second branch-off
Outward: Shoulder, Utility (Probabaly whatever weapon/equipment is stored in the pylon), Mon Unit
Branching up: Up Limb, Lock 1, Lock 2, Thorax.
All the way up top: Hand, and 5 bars representing the 5 fingers: TH (thumb), IF(Index Finger), MF(Middle Finger), RF(Ring Finger), LF(Little Finger)
So while mostly this is a status display of the Eva state it's still an iterface.
Lock 1 and Lock 2 aroud the shoulder area are displayed as 2 holes, so they're probably these lock bolts.
I had never heard any of this before, but it makes perfect sense. Awesome stuff, thanks for sharing!