LilyPond Beginnershandleiding

Hoofdstuk 3: Fundamentele concepten 81
\clef "bass"
\new Voice {
\PedalOrganMusic
}
>> % end PedalOrgan Staff
>>
} % end Score context
The above layout of the organ staves is almost perfect; however, there is a slight defect which
is not visible by looking at just a single system: The distance of the pedal staff to the left hand
staff should behave approximately the same as the right hand staff to the left hand staff. In
particular, the stretchability of staves in a PianoStaff context is limited (so that the distance
between the staves for the left and right hand can’t become too large), and the pedal staff should
behave similarly.
Stretchability of staves can be controlled with the staff-staff-spacing property of the
VerticalAxisGroup ‘graphical object’ (commonly called ‘grob’s within the lilypond documentation)
– don’t worry about the details right now; this is fully explained later. For the curious,
have a look at Sectie “Overview of modifying properties” in Notatie-handleiding. In this case,
we want to modify the stretchability sub-property only. Again, for the curious, you can find
the default values for the staff-staff-spacing property in file ‘scm/define-grobs.scm’ by looking
up the definition of the VerticalAxisGroup grob. The value for stretchability is taken from
the definition of the PianoStaff context (in file ‘ly/engraver-init.ly’) so that the values are
identical.
\score {
% end ManualTwo Staff context
>> % end PianoStaff context
\new Staff = "PedalOrgan"