This is the flow:!NoteWorthyComposer(2.751)
|AddStaff|Name:"Staff"
|StaffProperties|EndingBar:Open (hidden)|BoundaryTop:16|BoundaryBottom:20
|Lyrics|Align:Standard Rules
|Lyric1|Text:"A B C D E F G\n"
|Lyric2|Text:"A B C D E F G\n"
|Lyric3|Text:"A B C D E F G\n"
|Lyric4|Text:"A B C D E F G\n"
|Text|Text:"pickup"|Font:StaffBold|Pos:8
|Rest|Dur:Whole|Opts:Lyric=Always
|Bar|Style:MasterRepeatOpen|Visibility:Always
|Text|Text:"vamp"|Font:StaffBold|Pos:8
|Rest|Dur:Whole|Opts:Lyric=Always
|Bar|Style:MasterRepeatClose|Visibility:Always
|Bar|Style:MasterRepeatOpen|Visibility:Always
|Ending|Endings:1,2,3|Visibility:Always
|Text|Text:"verse"|Font:StaffBold|Pos:8
|Rest|Dur:Whole|Opts:Lyric=Always
|Bar|Visibility:Always
|Ending|Endings:1|Visibility:Always
|Text|Text:"v1 end"|Font:StaffBold|Pos:8
|Rest|Dur:Whole|Opts:Lyric=Always
|Bar|Visibility:Always
|Ending|Endings:2,3|Visibility:Always
|Text|Text:"v2,3 end"|Font:StaffBold|Pos:8
|Rest|Dur:Whole|Opts:Lyric=Always
|Bar|Visibility:Always
|Ending|Endings:1,2,3,4|Visibility:Always
|Text|Text:"chorus"|Font:StaffBold|Pos:8
|Rest|Dur:Whole|Opts:Lyric=Always
|Bar|Style:MasterRepeatClose|Visibility:Always
|Text|Text:"out"|Font:StaffBold|Pos:8
|Rest|Dur:Whole|Opts:Lyric=Always
|Bar|Style:SectionClose|Visibility:Always
!NoteWorthyComposer-End
If you care about appearance, be careful with decorated bar lines.
They often need to be "faked" with text or put on non-playing layered staves.