[Pharo-users] Putting checkboxes in ListPresenter

Guys, I am learning this new "spec" thing. I created a simple Spec "list" object with the following code: arbitraryList := ListPresenter new. arbitraryList items: #('one' 'two' 'three' 'four. . .'); title: 'Arbitrary list'. arbitraryList openWithSpec. Which creates a simple list like follows: https://steverstuff.s3.amazonaws.com/arbitrary_list.png Is there any way to make a SpecPresenter object with an arbitrary list of checkboxes? Kind of like a check-off list? What is the best way of doing this? Should I put checkbox objects in the "items:" selector? Or is there another way to do it? Please forgive the naive question.