How a draft group's rows choose their tokens: each row's draw, and the
selection the group resolved when it bound its requests. A drafter that
selects over its target's head binds one selection operation from
selection when its rows open; its draft loop calls that operation.
How a draft group's rows choose their tokens: each row's draw, and the selection the group resolved when it bound its requests. A drafter that selects over its target's head binds one selection operation from
selectionwhen its rows open; its draft loop calls that operation.