@lilypondfile[verbatim,quote,texidoc,doctitle]
{setting-the-minimum-length-of-hairpins.ly}
+@lilypondfile[verbatim,quote,texidoc,doctitle]
+{moving-the-ends-of-hairpins.ly}
+
@cindex al niente
@cindex niente, al
slurs may overlap a regular slur, see @ref{Phrasing slurs}. When
multiple regular slurs are needed in a single @code{Voice},
matching slur starts and ends need to be labelled by preceding
-them with @code{\=} followed by an identifying number or string.
+them with @code{\=} followed by an identifying key (a symbol or
+non-negative integer).
@lilypond[verbatim,quote]
\fixed c' {