Re: How do I make long bar rests?
Even hidden objects take up some space.
Very few hidden objects take up any space on the printed page. The only exception (I know of) is hidden notes/rests that have a rhythmic position that is not shared by visible notes/rests on some other staff included in 'Contents'. I consider this exception a bug. It causes too much space space when trying to beat 4 against 5 and 5 against 6.
I can't find any hidden objects that take up space on the printed page. This was a problem in the beta version, but it seems that all those bugs were tracked down and killed.
NWC2 is hostile to beating 5 against 6, but hidden rests do not seem to be the cause.