let actor_type   = [| 'Developer, 'CI, 'Agent |] in
let purpose_type = [| 'Testing, 'Benchmarking, 'Demonstration, 'Integration |] in

{
  Actor   = actor_type,
  Purpose = purpose_type,

  Scenario = {
    actor       | actor_type     | default = 'Developer,
    purpose     | purpose_type,
    description | String         | default = "",
    dependencies| Array String   | default = [],
    run         | String         | default = "",
    validates   | Array String   | default = [],
  },
}