dvd-rw just means you can re-use the disc i.e write over the contents,
dvd-r or dvd+ means you can only write on them once,
Thanks Bert. I think it must be a DVD-RW but still not sure!If it fails i can allways try again with a vhs tape as they usually do repeats on BBC4. I can`t keep up with technology. My brains still stuck in 1980!