Quite right, Rob. I erred on two counts. I hope you can find it in your heart to forgive me twice!

Rubric is, of course, the correct spelling BUT!!! I have incorporated the word brick into my handle because the Rubrics building (The oldest surviving in Trinity College Dublin) is a quite outstanding red-brick building, whilst the rest are gray stone or modern concrete. So, it was a deliberate act of mis-spelling on my part.