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Sometimes you may want to have the notes on one staff be used as cue notes
on another staff, typically to help the players of one instrument know when
they should come in, by showing what another instrument will be playing just
before their entrance. One way to do this is to define a
macro.
In this example, the macro is called NAC, for "normal and cue."
The first parameter is the staff/voice that should get normal sized notes,
the second is the staff/voice that should get cue sized notes, and the third
is the Mup input for the notes themselves.
Since REG and CUE parameters could each be passed a list, if
multiple instruments are playing in unison, they could all in be listed as
REG, and if you wanted multiple staffs to get the same cues,
they could all be listed as CUE, as shown in this example:
define NAC(REG, CUE, INPUT) REG: INPUT CUE: [cue]... INPUT @ score staffs=4 staff 3 // it's okay if some of the staffs are invisible visible=n music NAC(1&3, 2&4, c;f;a;g;) bar
