system-interface

This is the toplevel object: each object in a score ultimately has a System object as its X and Y parent.

Internal properties:

all-elements (unknown)

list of all grobs in this line. Its function is to protect objects from being garbage collected.

columns (unknown)

list of grobs, typically containing paper-columns or note-column objects.

pure-Y-extent (pair of numbers)

The estimated height of a system

spaceable-staves (unknown)

Objects to be spaced during page layout.

This grob interface is used in the following graphical objects: System