<classSpec ident="att.optimization" module="MEI.shared" type="atts">
                        
                        <desc>Attributes pertaining to layout optimization.</desc>
                        
                        <attList org="group">
                           
                           <attDef ident="optimize" usage="opt">
                              
                              <desc>Indicates whether staves without notes, rests, etc. should be displayed. When the
                                 value is 'true', empty staves are displayed.</desc>
                              
                              
                              </attDef>
                           </attList>
                        </classSpec>