Here is an example of a music function which makes use of this.
The use of @code{\temporary} ensures the values of the
@code{cross-staff} and @code{style} properties are restored on exit
-to whatever values they had when the @code{cross-staff} function was
+to whatever values they had when the @code{crossStaff} function was
called. Without @code{\temporary} the default values would have been
set on exit.