> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stopbars.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Legacy

Legacy is a simple straightforward system, containing the core airport lighting management features. This guide covers everything you need to know to effectively operate airport lighting using the Legacy interface.

<Frame>
  <img src="https://mintcdn.com/bars-20e5ea6e/QZWIRRfteHw7Meo1/images/v2/vatSys_Legacy.png?fit=max&auto=format&n=QZWIRRfteHw7Meo1&q=85&s=84077b15f1e89c9889bb226b565d5a25" alt="Legacy interface" width="1071" height="563" data-path="images/v2/vatSys_Legacy.png" />
</Frame>

## Understanding Shared State

One of the key characteristics of the Legacy profile type is that **stopbar states are shared between all controllers** using the plugin.

Unlike older versions of BARS, you do not "own" or "claim" a runway when managing stopbars. Any controller with the airport configured can toggle any stopbar, and all changes are immediately visible to other controllers and pilots.

## Stopbar Controls

### Toggling Stopbars

To toggle a stopbar, simply **left-click or right-click** on the stopbar. Both mouse buttons perform the same action.

<Steps>
  <Step title="Click to toggle">
    Locate the stopbar you want to toggle in your runway window, then click it using either your **left or right mouse button**. The stopbar will toggle between on and off states.

    <Frame>
      <img src="https://mintcdn.com/bars-20e5ea6e/QZWIRRfteHw7Meo1/images/v2/vatSys_Legacy-Toggle.gif?s=765a9683520896a7c956ecab85e8b87e" alt="Legacy stopbar toggle" width="1067" height="535" data-path="images/v2/vatSys_Legacy-Toggle.gif" />
    </Frame>
  </Step>
</Steps>

<Info>
  The Legacy profile type does not include a **visible** reactivation countdown. Stopbars still **reactivate automatically after 45 seconds** once they have been turned off.
</Info>

## Stopbar States

| State   | Appearance |
| ------- | ---------- |
| **On**  | Red        |
| **Off** | Black      |

<Columns>
  <Frame caption="Stopbar On">
    <img src="https://mintcdn.com/bars-20e5ea6e/QZWIRRfteHw7Meo1/images/v2/vatSys_Legacy-StopbarOn.png?fit=max&auto=format&n=QZWIRRfteHw7Meo1&q=85&s=15ec2e7de6d88cb00c84ea9c2d69346d" alt="Legacy stopbar on" width="246" height="150" data-path="images/v2/vatSys_Legacy-StopbarOn.png" />
  </Frame>

  <Frame caption="Stopbar Off">
    <img src="https://mintcdn.com/bars-20e5ea6e/QZWIRRfteHw7Meo1/images/v2/vatSys_Legacy-StopbarOff.png?fit=max&auto=format&n=QZWIRRfteHw7Meo1&q=85&s=5a57f47901aad27e911b293f4c206327" alt="Legacy stopbar off" width="246" height="150" data-path="images/v2/vatSys_Legacy-StopbarOff.png" />
  </Frame>
</Columns>