# Door Link Tool

### Airlock System

Two doors that must never be open at the same time.

**Door 1 (Left)**

| Setting  | Value      |
| -------- | ---------- |
| Group ID | Airlock\_A |

**Door 2 (Right)**

| Setting  | Value      |
| -------- | ---------- |
| Group ID | Airlock\_A |

**Result:** Opening Door 1 automatically closes Door 2, and vice versa. Players cannot double-open the airlock.

***

### Containment Chamber Cross-Lock

Four doors around a central chamber that all seal each other off.

**Outer Doors (×2)**

| Setting  | Value               |
| -------- | ------------------- |
| Group ID | Chamber\_Alpha\_Out |

**Inner Doors (×2)**

| Setting  | Value              |
| -------- | ------------------ |
| Group ID | Chamber\_Alpha\_In |

**Result:** The outer doors behave as one group, and the inner doors behave as another. You can layer multiple `DoorLink` groups around the same room for staged access.

***

### Elevator Lobby Doors

Doors on the same floor that should act as a single bank.

**Left Elevator Door**

| Setting  | Value              |
| -------- | ------------------ |
| Group ID | Elevator\_Lobby\_B |

**Right Elevator Door**

| Setting  | Value              |
| -------- | ------------------ |
| Group ID | Elevator\_Lobby\_B |

**Result:** Opening one elevator door closes the other, keeping the lobby entrance controlled.


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