\version "1.3.146"


%{

Test clef engraver by setting \property directly. \clef is merely a front-end  to this.

%}

\score { \notes {
  \property Staff.clefGlyph = #"clefs-F"
  \property Staff.clefPosition = #2
  c'4
  \property Staff.clefGlyph = #"clefs-G"
  c'4
  \property Staff.clefGlyph = #"clefs-C"

  c'4
	\property Staff.clefOctavation = #7 
  c'4
	\property Staff.clefOctavation = #0 
	\property Staff.clefPosition = #0
  c'4
	\clef "bla"
  c'4

}}
