It was here that the thaum, hitherto believed to be the smallest possible 
particle of magic, was succesfully demonstrated to be made up of /resons/ 
(Lit.: 'Thing-ies') or reality fragments. Currently research indicates that 
each reson is itself made up of a combination of at least five 'flavours', 
known as 'up', 'down', 'sideways', 'sex appeal' and 'peppermint'. 
        -- (Terry Pratchett, Lords and Ladies)