This is another quick fix requested by Vitor. With the current schema it is not possible to specify a period for SA and he wants to be able to specify e.g. imt="SA(0.010)". I would like to see a launchpad issue (or a task in the future sprint doc) where it is clear that we need to revise these schema and take an uniform decision for both risk inputs and hazard outputs. Giuseppe can you provide one?