- Choose Window > 
 Advanced Tools. Click the Mirror 
 Tool  
, and SHIFT+double-click the 
 mirrored measure. The Mirror Attributes window appears. 
            - If you want to rebeam the notes in the measure, 
 click Rebeam, and specify a rebeaming option. Rebeam to Time Signature 
 beams the notes in the usual way, correcting any peculiar beaming that 
 arose from the use of composite mirroring. If you click Rebeam to Beam 
 Chart, a window appears with a handle on each eighth (or smaller value) 
 note in the measure. In this window, you break the beam to a note (from 
 the previous note) by clicking its handle. Any notes whose handles you 
 haven’t selected will be beamed when you return to the document. (To 
 beam all notes together, select the first handle in the measure.) Click 
 OK when you’re finished.
 
            - If you want the mirror to display only selected 
 notes (instead of all notes) from the source measure, click Selective 
 Mirror ID. A picture of the complete composite mirror appears, 
 with a handle on every note. Click the handles of the notes you want to 
 include in this sub-selection of your composite mirror, known as a selective 
 mirror. Any handles you don’t select will be omitted from the final display 
 of the measure (or turned into rests). You can use a selective mirror 
 to select the melody notes within a triadic passage, for example. Click 
 OK when you’re finished selecting handles.
 
            - Specify a transposition, if desired. Click 
 OK.