Well - the paper came on a roll, and it is clearly at its happiest all curled up! I am reluctant to soak it and stretch it (partly due to its size) so a piece cut to roughly the right size has been "persuaded" to relax for the last 4 days - it's finally flat enough to work on.
So today I've been ruling up for the family tree. It's thick paper, so when it came to wanting to trace through where the names will need to be written, I did what I always do which was to use a window as light box. But this time it had to be the patio doors - nothing else big enough!