# Hints

> The function's metadata, extracted from any structured comments decorating the function.

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor.ShaderApiReflection](/engine/6000.5/script-reference/unityeditor/shaderapireflection.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public ReadOnlyDictionary<string, string> Hints { get; }
```

### Remarks

A hint is a key-value pair of strings which may be used to store arbitrary metadata about a function. Hints are pure data and so don't do anything in isolation, but certain tools, such as ShaderGraph, make use of certain named hints.