| Attributes pertaining to layout optimization. | |
| Module | MEI.shared | 
| Members | scoreDef (via att.scoreDef.vis) | 
| Attributes | @optimize(optional)Indicates whether staves without notes, rests, etc. should be displayed. When the
                  value is 'true', empty staves are displayed.
               Value conforms to data.BOOLEAN.
               att.optimization | 
| Declaration | 
                   |