LilyPond Beginnershandleiding

Hoofdstuk 4: Tweaking output 93
Zie ook
3
3:2
Notation Reference: Sectie “The tweak command” in Notatie-handleiding.
4.2 The Internals Reference manual
4.2.1 Properties of layout objects
Suppose you have a slur in a score which, to your mind, appears too thin and you’d like to draw
it a little heavier. How do you go about doing this? You know from the statements earlier about
the flexibility of LilyPond that such a thing should be possible, and you would probably guess
that an \override command would be needed. But is there a heaviness property for a slur,
and if there is, how might it be modified? This is where the Internals Reference manual comes
in. It contains all the information you might need to construct this and all other \override
commands.
Before we look at the Internals Reference a word of warning. This is a reference document,
which means there is little or no explanation contained within it: its purpose is to present
information precisely and concisely. This means it might look daunting at first sight. Don’t
worry! The guidance and explanation presented here will enable you to extract the information
from the Internals Reference for yourself with just a little practice.
Let’s use a concrete example with a simple fragment of real music:
{
}
\key es \major
\time 6/8
{
r4 bes8 bes[( g]) g |
g8[( es]) es d[( f]) as |
as8 g
}
\addlyrics {
The man who | feels love's sweet e -- | mo -- tion
}
8
6
3
sweet
The
love's e
man who feels
motion
Suppose now that we decide we would like the slurs to be a little heavier. Is this possible?
The slur is certainly a layout object, so the question is, ‘Is there a property belonging to a slur
which controls the heaviness?’ To answer this we must look in the Internals Reference, or IR for
short.
The IR for the version of LilyPond you are using may be found on the LilyPond website at
http://lilypond.org. Go to the documentation page and click on the Internals Reference link.
For learning purposes you should use the standard HTML version, not the ‘one big page’ or the
PDF. For the next few paragraphs to make sense you will need to actually do this as you read.
Under the heading Top you will see five links. Select the link to the Backend, which is where
information about layout objects is to be found. There, under the heading Backend, select the