# `Expresso.Presenter.Projection.Mark`
[🔗](https://github.com/rellen/expresso/blob/main/lib/expresso/presenter/projection.ex#L50)

The target of the `mark` entity of the presenter DSL

# `t`

```elixir
@type t() :: %Expresso.Presenter.Projection.Mark{
  __spark_metadata__: term(),
  attribute: String.t(),
  key: :slide | :index,
  scroll: boolean(),
  selector: String.t(),
  values: [{String.t(), atom(), integer()}]
}
```

An attribute on the elements whose number agrees with a field of the state

`key` names the number of an element: `:slide` reads `data-slide`, and
`:index` reads `data-index`. Each value holds the text of the attribute, a
field of the state and an offset.

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*Consult [api-reference.md](api-reference.md) for complete listing*