Re: [NWC2] How to cleanly extend the last system.
I may not have understood all the posts here but I wonder why the last bar line on a staff which you can set to "Section Close or Master Repeat Close or Single or Double" bar type does not just have a Force System Break(Top Staff Only) added to the General tab in the Staff properties ?
I don't know NWC's reason, but I reckon that it is useful to be able to NOT fully justify the last system. It is not uncommon to want the final system to reach only partway across the page.