anchor.diff:        },
         {
           extend: 'pdf',
  -        className: 'btn-sm btn-outline-secondary',
           orientation: 'landscape',
           pageSize: 'A4',
           exportOptions: {
  
positive.code:       },
        {
          extend: 'excel',
          className: 'btn-sm btn-outline-secondary',
          exportOptions: {
            columns: ':visible',
            search: ':applied'
  
negative.code:       },
        { 
          extend: 'print',
        },
        {
          extend: 'colvis',
          text: "<%= I18n.t('lackmus.change_columns') %>",
          columns: ':gt(0)'
        }
  