The inner strands can be sepparated into smaller diameter threads. Don't take the following figures for gospel, this is off the top of my head and it's been a while since I've seen it in print, but I believe the seven separate inner strands are about 60 lbs "test" and each of those can be sepparated into finer strands of about 12 lb "test". Again, I'm not willing to bet a paycheck on the numbers, but I KNOW that they (the inner strands) can be (easily) unraveled into finer threads for sewing/fishing/etc. uses. Hope this explanation helps. Get a sample, strip it down, and this becomes obvious when you see what you've got to work with.
Troy