note. Overrides automatic beaming. The value is only used once,
and then it is erased.
+ @item @code{tieDash}@indexcode{tieDash} @propertytype{integer}
+ Set dashing of ties. See also @code{slurDash}
+
@item @code{tieVerticalDirection}@indexcode{tieVerticalDirection} @propertytype{direction}
Set to @code{\free} for free choice of tie direction, set to
@code{\up} to force ties up, set to @code{\down} to force ties