The clef indicates which lines of the staff correspond to which pitches.
The clef can be set with the \clef command
{ c''2 \clef alto g'2 }
treble, violin, G, G2alto, Ctenorbass, FfrenchsopranomezzosopranobaritonevarbaritonesubbasspercussiontabBy adding _8 or ^8 to the clef name, the clef is
transposed one octave down or up, respectively, and _15 and
^15 transposes by two octaves. The argument clefname
must be enclosed in quotes when it contains underscores or digits. For
example,
\clef "G_8" c4
This command is equivalent to setting clefGlyph,
clefPosition (which controls the Y position of the clef),
middleCPosition and clefOctavation. A clef is printed
when any of these properties are changed. The following example shows
possibilities when setting properties manually.
Program reference: Clef (lilypond-internals) .
This page is for LilyPond-2.5.11 (development-branch).