EDITMEMO()
  Short:
  ------
  EDITMEMO() Performs a windowed memoedit() on a memo field

  Returns:
  --------
  <lChanged> -> Was the memo field changed

  Syntax:
  -------
  EDITMEMO([cMemoName],[nTop,nLeft,nBottom,nRight],;
        [lModify],[nLineLength],[cTitle])

  Description:
  ------------
  Pops up a box allowing editing of a memo field.
  Escape exits, F10 saves.

  Options for import and export as well.

  Edits field named MEMO by default, otherwise edits
  fieldname passed as [cMemoName]. Uses coordinates 2,10,20,69
  unless passed coordinates as [nTop, nLeft, nBottom, nRight]

  [lModify] - True = allow edit (default), False = view only

  [nLineLength] - line length - default is window width-1

  [cTitle]  Title (max 25 characters) Default is MEMO PAD (new to 3.5)

  Examples:
  ---------
   editmemo()
   editmemo("NOTES")
   editmemo("NOTES",2,2,22,78)
   editmemo("NOTES",2,2,22,78,.f.)

  Notes:
  -------
  If editing, must have a box width of at least 50
  Requires a memo FIELD - will not work on a memvar.

  See EDITMEMOV() to edit memvars.

  Source:
  -------
  S_EDITM.PRG