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# tickMarkValue(at:)

Returns the slider’s value represented by the tick mark at the specified index.

```
func tickMarkValue(at index: Int) -> Double
```

## Parameters

`index`

The index of the tick mark for which to return the value. The minimum-value tick mark has an index of `0`.

## Return Value

The value of the specified tick mark.

## Discussion

In its implementation of this method, the receiving `NSSlider` instance invokes the method of the same name of its `NSSliderCell` instance.

---

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