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# subscript(tab:)

The customization of the tab, identified by its customization identifier.

```
subscript(tab id: String) -> TabViewCustomization.TabCustomization { get set }
```

## Overview

You can imperatively set properties by subscripting with the tab ID.
The following example sets the tab’s sidebar visibility:

```
customization[tab: "com.myApp.alerts"].sidebarVisibility = .hidden
```

---

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