lilypond-usage: Warning staff affinities should only decrease
Warning staff affinities should only decrease
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This warning can appear if there are no staves in the printed output,
for example if there are just a ‘ChordName’ context and a ‘Lyrics’
context as in a lead sheet. The warning messages can be avoided by
making one of the contexts behave as a staff by inserting
\override VerticalAxisGroup.staff-affinity = ##f
at its start. For details, see “Spacing of non-staff lines” in 
(lilypond-notation)Flexible vertical spacing within systems.
Info Catalog
lilypond-usage: Error message FT_Get_Glyph_Name
lilypond-usage: Common errors
lilypond-usage: Error message unexpected new