Peachtree Old style Insulated Patio Door (IPD) Citadel French Swinging door Parts:
This is used on the door with 3 point lock spring locks, that extend and become bolts.
The 3 latches are spring loaded and become rigid when door is locked.

Auxiliary Locking Module are handed - XO or XO
Peachtree views doors from outside to determine handing.
X = Active Door
O = Stationary or Passive Door
XO = Active / Stationary or Passive
OX = Stationary or Passive / Active

Handing cannot be changed - See additional images

Peachtree IPD Resources:
IPD Installation Guide (article & diagrams)
IPD Lock Replacement (video)
Reversing the Panic Release Function (video)
Reversing the IPD Center Lock Latch Direction (diagram/article)