# Signal (SIGNAL)

> QuantNexus indicator page for a signal-line helper.

**Route**: `/quantnexus/indicators/signal/`

## What It Does

SIGNAL is a generic signal-line helper used as a smoothed reference line in oscillator workflows.

## Formula

`Signal = smoothed rolling value over the selected period`

## Parameters

- `period` - default `30`

## C++23 API

```cpp
#include <nonabt/indicators/signal.hpp>
auto signal = std::make_unique<nonabt::SIGNAL>(data().close(), 30);
```

## Common Usage

- Use it as a signal line or helper baseline.
- Keep it paired with an oscillator or spread-based indicator.
- Best used as a supporting line rather than a primary entry trigger.