# forge.param.Source

```python
forge.param.Source(default: Any, *, group: str | None = None, label: str | None = None, help: str | None = None, order: int | None = None, inline: str | None = None, optimize: bool = True, space: str | None = None, name: str | None = None) -> None
```

A price field (``close``, ``hl2``...) or another indicator's output.

An output is named ``"<id>.<output>"``.

Since Forge API 1.