// The box having the script name "lastedited" contains
// the field to identify who is editing the record.
// The box "edithistory" contains the history of who
// has previously edited the record.

var curBoxName = "lastedited";
var histBoxName = "edithistory";

function onRecordOpen()
{
  var curBox;       // curBoxName box object
  var histBox;      // histBoxName box object
  var curBoxCont;   // previous contents of curBox
  var histBoxCont;  // previous contents of histBox
  var es;           // entry separator
  var newHist;      // new contents of histBoxName

  // check for existence of boxes curBoxName and histBoxName,
  // returning if they do not exist (or have not been given
  // appropriate script names)
  curBox = Form.boxes(curBoxName);
  histBox = Form.boxes(histBoxName);
  if (!curBox)
    return;
  if (!histBox)
    return;

  // put the previous contents of each box into a variable
  curBoxCont = curBox.content;
  histBoxCont = histBox.content;

  // get the entry separator
  es = Application.entrySeparator;

  // add previous curBox contents to histBox contents and empty curBoxName
  if (histBoxCont == "")
    newHist = curBoxCont;
  else
    newHist = curBoxCont + es + histBoxCont;
  histBox.content = newHist;
  curBox.content = "";
}