Size og time-sig and mmrest

[Rune Zedeler]

This creates a small staff:

    \translator {
      % only correct for 20pt font
      \StaffContext
      \name SmallStaff
      \alias Staff
      StaffSymbol \override #'staff-space = #(/ 16 20)
      NoteHead \override #'font-relative-size = #-1
      Stem \override #'font-relative-size = #-1
      Beam \override #'font-relative-size = #-1
      TextScript \override #'font-relative-size = #-1
      Slur \override #'font-relative-size = #-1
      Accidentals \override #'font-relative-size = #-1

      Beam \override #'thickness = #(* 0.48 (/ 16 20))

      Beam \override #'space-function = #(lambda (x) (* (/ 16 20) 
(default-beam-space-function x)))
      Clef \override #'font-relative-size = #-1
      TimeSignature \override #'font-relative-size = #-1 % this don't work? 
<----------------------
      KeySignature \override #'font-relative-size = #-1
      Script \override #'font-relative-size = #-1
      Rest \override #'font-relative-size = #-1
      MultiMeasureRest \override #'font-relative-size = #-1 % this don't work? 
<-------------------
      Dots \override #'font-relative-size = #-1
    }

But by some reason the TimeSignature and the MultiMeasureRest do not get 
reduced in size.
I know that mmrest is part of context voice but that should be no problem as 
voice is a child of staff - and by the way: moving mmrest to staff does not 
help. timesig is part of staff as it should be.

-Rune