Organ Music Score query - Trumpet tune - Charpentier?

Question

I have borrowed a copy of the organ score for 'Prelude' to Te Deum by Charpentier, otherwise known as 'Trumpet Tune' and was used as the intro music to 'Eurovision Song Contest'.

As you'll see from the query, I not very experienced! Firstly, have a look at this copy of part of the score http://uk.pg.photos.yahoo.com/ph/richard_humph/detail?.dir=/47fascd&.dnm=4868scd.jpg&.src=ph

On the third line down, there's a dotted line which connects a note in the top treble stave to 2 notes that are played together in the bottom treble stave. What does this dotted line mean?

Now look at this part of the score http://uk.pg.photos.yahoo.com/ph/richard_humph/detail?.dir=/47fascd&.dnm=da9fscd.jpg&.src=ph Again there's a dotted line connecting two notes but, this time, the note in the treble stave is in brackets - why?

Any asistance given will be much appreciated

Answer 1

It just means that you're swapping the inner part from the RH to the LH
I've no idea about the bracket. It must be editorial.