# TabButtonViewOptions

typedef

The options for the [`TabButtonView`](module_ui_tabs_tabbuttonview-TabButtonView.md) class.

[See source](https://github.com/ckeditor/ckeditor5/blob/master/packages/ckeditor5-ui/src/tabs/tabbuttonview.ts#L76)

<a id="properties">

## Properties

<a id="member-class">

### `class?: ArrayOrItem<string>`

An additional CSS class added to the [`element`](module_ui_tabs_tabbuttonview-TabButtonView.md#member-element).

<a id="member-side">

### `side?: TabPosition`

The position of the tab button.

#### Value

`object`

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Full index of the CKEditor 5 API reference: [llms.txt](llms.txt)