<!-- Public documentation export; not library implementation source. -->
# LineToolState

[Integration guide](https://docs.lumencharts.com/charting-library/reference/compatibility) · [Reference index](https://docs.lumencharts.com/charting-library/api/)

Public contract reference. This declaration describes types and callback shapes; availability is constrained by the linked integration guide and the runtime capability. Legacy product-specific fields are not a promise of implementation.

## id {#id}

```ts
id: EntityId;
```

Use the type signature above and the integration guide for the owning capability.

## symbol {#symbol}

```ts
symbol?: string;
```

Use the type signature above and the integration guide for the owning capability.

## ownerSource {#ownersource}

```ts
ownerSource: string;
```

Use the type signature above and the integration guide for the owning capability.

## groupId {#groupid}

```ts
groupId?: string;
```

Use the type signature above and the integration guide for the owning capability.

## currencyId {#currencyid}

```ts
currencyId?: string | null;
```

Use the type signature above and the integration guide for the owning capability.

## unitId {#unitid}

```ts
unitId?: string | null;
```

Use the type signature above and the integration guide for the owning capability.

## state {#state}

```ts
state: unknown;
```

Use the type signature above and the integration guide for the owning capability.

## Related types

- [EntityId](https://docs.lumencharts.com/charting-library/api/EntityId)

---
Documentation page: https://docs.lumencharts.com/charting-library/api/LineToolState