just a dumb remark : the specs uses the word 'Authorization', while you are using 'Authorisation' I'm wondering if I've ever seen 'Authorisation'. I've noticed you wrote 'memorise' too
Just got something for for your curiousity::
" The American habit of ending words either '-ize' or '-ise' at random is inconsistent and hard to remember, compared to British usage of always ending '-ise'. So although Americans criticize and have to memorize, they also advise and televise; Brits on the other hand criticise, memorise, advise and televise. British usage is more consistent, and much easier to remember.."