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Using the side-position-interface
An object which supports the side-position-interface can be
placed next to its parent object so that
the specified edges of the two objects touch. The object may be
placed above, below, to the right or to the left of the parent.
The parent cannot be specified; it is determined by the order of
elements in the input stream. Most objects have the associated
note head as their parent.
The values of the side-axis and direction properties
determine where the object is to be placed, as follows:
side-axispropertydirectionpropertyPlacement 0-1left 01right 1-1below 11above
When side-axis is 0, X-offset should be set to
the procedure ly:side-position-interface::x-aligned-side.
This procedure will return the correct value of X-offset to
place the object to the left or right side of the parent according
to value of direction.
When side-axis is 1, Y-offset should be set to
the procedure ly:side-position-interface::y-aligned-side.
This procedure will return the correct value of Y-offset to
place the object to the top or bottom of the parent according
to value of direction.