@PauloCereda Song going round my head, needs a bit of work:
"You can do such a lot with arara,
you can use every part of it too.
For work or for pleasure,
it's a triumph, it's a treasure
oh there's nothing that arara cannot do."
(A-ha, @Brent.Longborough's arrived. Between him and @DavidCarlisle I suspect *one* at least will get the reference.)