rlist" map and ranges
  across it building the HTML as called for in the format value ("initials",
  "name", "name_plus", or "bio").

  NOTES:

  Users can use a file_as value to control sort order. Otherwise lists are
  sorted alphabetically by last_name. If you wanted, for example, a list of
  essay contributors ordered in the way they are ordered in the page yaml, you
  could assign a numeric file_as value to each. 1, 2, 3 etc. Note though that
  this file_as override will cary over to other uses of the 