Gets or sets the variable label (label attribute) of a labelled vector. The
getters/setters should be used rather than manipulating attributes directly,
since these functions perform checks to ensure that the result, and the
resulting labelled variable, are valid.
ll_var_label(x)ll_var_label(x) <- value
A labelled variable
Other labelled light:
ll_assert_labelled(),
ll_labelled(),
ll_to_character(),
ll_val_labels(),
threadbare()