Rhythm
Rhythms in **kern data are given in terms of the number of units
the duration of the note will divide a whole note. Whole notes are 1 since there
is one whole note in a whole note. Half notes are 2 since there are two in
a whole note. Quarter notes are 4 since there are four in a whole note, etc.
An exception to the numeric system for rhythms is used for some notes
longer than a whole note: breves are represented by 0, longs are represented
by 00 and maximas by 000.
The shortest note value that verovio can display is a 256th note, although shorter values
can be represented in **kern data.
Augmentation dots
Augmentation dots are represented by period characters (.). The first one
adds 1/2 the duration of the plain note,
the next adds an additional 1/4 of the original note, and so on.