The members of the panel were sent regular ballots asking about matters of usage; the completed ballots were returned and tabulated, and the results formed the basis for special usage notes appended to the relevant dictionary entries. In many cases, these notes not only reported the percentage of panelists who considered a given usage or construction to be acceptable, but would also report the results from balloting of the same question in past decades, to give a clearer sense of how the language changes over time.