-@cindex voices, more -- on a staff
-When different melodic lines are combined on a single staff they
-are printed as polyphonic voices; each voice has its own stems,
-slurs and beams, and the top voice has the stems up, while the
-bottom voice has them down.
-
-Entering such parts is done by entering each voice as a sequence
-(with @w{@code{@{...@}}}) and combining these simultaneously,
-separating the voices with @code{\\}:
-
-@lilypond[verbatim,quote,relative=2]
-<<
- { a4 g2 f4~ f4 } \\
- { r4 g4 f2 f4 }
->>
-@end lilypond
+@cindex voices, more on one staff
+@cindex single staff polyphony
+@cindex spacer rest
+@cindex rest, spacer