Hi there Freddynl,
I would assume that as a musical composistion that a Style file might have problems but if it is classed as a piece of software maybe this makes the difference?
If I write a poem I can copyright it regardless of its length one line or forty. I assume it is the same for software? Does not matter how much data from a phrase to a whole song from a little java script to a whole website? It is the data itself that matters.
I could be wrong (and very often am),just my thoughts.
ttfn
Tony W