IR 3.2.111 time-signature-interface doesn't mention the 'numbered style. Also, on a more general level, the default description for the "style" property in IR 3 is the same for a lot of different grobs, IIRC:
This setting determines in what style a grob is typeset. Valid choices depend on the stencil callback reading this property. It would be nice to see more specific entries like: IR 3.2.64 note-head-interface: 'style The note-head style. Valid choices are default, baroque, neomensural, mensural, petrucci, harmonic, harmonic-black, harmonic-mixed, diamond, cross, xcircle, triangle, slash. Also see NR B.7. IR 3.1.114 time-signature: 'style The time-signature style. Valid choices are C, neomensural, mensural, single-digit and numbered. Also see IR 3.2.111 - Mark _______________________________________________ bug-lilypond mailing list bug-lilypond@gnu.org http://lists.gnu.org/mailman/listinfo/bug-lilypond