marks translate to a fixed fraction of the available MIDI volume
range, crescendi and decrescendi make the volume vary linearly between
their two extremes. The fractions can be adjusted by
-@code{dynamicAbsoluteVolumeFunction} in @internalsref{Voice} context.
+@code{dynamicAbsoluteVolumeFunction} in @rinternals{Voice} context.
For each type of MIDI instrument, a volume range can be defined. This
gives a basic equalizer control, which can enhance the quality of
the MIDI output remarkably. The equalizer can be controlled by