- "A custos is a staff context symbol that appears at the end of a
- staff line with monophonic musical contents (i.e. with a single
- voice). It anticipates the pitch of the first note of the following
- line and thus helps the player or singer to manage line breaks
- during performance, thus enhancing readability of a score.
-
- Custodes were frequently used in music notation until the 16th
- century. There were different appearences for different notation
- styles. Nowadays, they have survived only in special forms of
- musical notation such as via the editio vaticana dating back to the
- beginning of the 20th century.
-
-[TODO: add to glossary]",
- "style adjust-if-on-staffline neutral-direction neutral-position");