# Sandbox.Animation.Skeleton.MaskNames

```csharp
IReadOnlyList<string> MaskNames { get; set; }
```

The names of this skeleton's bone masks. These are what an animation graph names to
weight a pose per bone - a mask authored on a model won't resolve.

Declared in [Sandbox.Animation.Skeleton](/api/Sandbox.Animation.Skeleton).
Assembly: `Sandbox.Engine`.