# HelpURLAttribute(string)

> Initialize the HelpURL attribute with a documentation url.

## Definition

* **Type:** Constructor
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public HelpURLAttribute(string url)
```

### Parameters

**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): The custom documentation URL for this class.