# StandardKeys class

Namespace: [Grasshopper2.Doc](https://developer.rhino3d.com/api/gh2/namespace/grasshopper2.doc.md) · Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

```cs
public static class StandardKeys
```

Exposes a set of standard keys used in various [KeyedValues](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.keyedvalues.md) instances throughout Grasshopper.

## Fields

- [AbsoluteTolerance](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.standardkeys/absolutetolerance.md): (static) Gets the key used to get or set absolute tolerances.
- [AngularTolerance](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.standardkeys/angulartolerance.md): (static) Gets the key used to get or set angular tolerances.
- [LanguageCulture](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.standardkeys/languageculture.md): (static) Gets the key used to get or set linguistic locales.
- [RelativeTolerance](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.standardkeys/relativetolerance.md): (static) Gets the key used to get or set relative tolerances.
- [UserNotes](https://developer.rhino3d.com/api/gh2/type/grasshopper2.doc.standardkeys/usernotes.md): (static) Gets the key used to get or set user specified notes.