"Norm" sign of a note

I want to put the "norm" (or modulo, or absolute value, in math) on a note, \breve put a vertical line at the left and at the right of the note, but I'd like to put two lines at the left and two lines at the right... is it possibile? -- View this message in context: http://old.nabble.com/%22Norm

Re: Force end measure with compound time signature

Solved like this #(set-time-signature 3 4) \override Staff.TimeSignature #'stencil = ##f and then #(set-time-signature 4 4) \override Staff.TimeSignature #'stencil = ##f Here the result http://old.nabble.com/file/p31426772/Gloria_Pagina_4.png -- View this me

Force end measure with compound time signature

Here is my problem http://old.nabble.com/file/p31425579/Gloria_Pagina_4.png I'm reporting the code of the bass part \bar "||" %\key g \major #(set-time-signature 13 4 '(3 4 3 3)) \override Staff.TimeSignature #'stencil = #(custom-time-signature "3" "4"