@code{label-dir} -- Side to which the fret label is attached.
@w{@code{-1}}, @code{LEFT}, or @code{DOWN} for left or down; @code{1},
@code{RIGHT}, or @code{UP} for right or up. Default @code{RIGHT}.
@code{label-dir} -- Side to which the fret label is attached.
@w{@code{-1}}, @code{LEFT}, or @code{DOWN} for left or down; @code{1},
@code{RIGHT}, or @code{UP} for right or up. Default @code{RIGHT}.