#### 3.15.5 Ancient flags

Use the `flag-style` property of grob Stem to select ancient flags. Besides the `default` flag style, only `mensural` style is supported

>          \override Stem #'flag-style = #'mensural
>          \override Stem #'thickness = #1.0
>          \override NoteHead #'style = #'mensural
>          \autoBeamOff
>          c'8 d'8 e'8 f'8 c'16 d'16 e'16 f'16 c'32 d'32 e'32 f'32 s8
>          c''8 d''8 e''8 f''8 c''16 d''16 e''16 f''16 c''32 d''32 e''32 f''32

Note that the innermost flare of each mensural flag always is vertically aligned with a staff line. If you do not like this behavior, you can set the `adjust-if-on-staffline` property of grob Stem to `##f`. Then, the vertical position of the end of each flare is different between notes on staff lines and notes between staff lines

There is no particular flag style for neo-mensural notation. Hence, when typesetting e.g. the incipit of a transcribed piece of mensural music, the default flag style should be used. There are no flags in Gregorian Chant notation.

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