FUNCTION MFIELDSTYPE()

  Short:
  ------
  MFIELDSTYPE() Pops up a list of fields of given type(s)

  Returns:
  --------
  <cFieldName> => name of selected field

  Syntax:
  -------
  MFIELDSTYPE(cType,[cTitle],[nTop,nLeft,nBottom,nRight])

  Description:
  ------------
  <cType> is a string containing 1 or more field TYPE
  symbols:

       C   Character
       N   Numeric
       D   Date
       L   Logical
       M   Memo

  Only fields of this type(s) are presented for the
  picklist. If no fields of this type(s) are present, a "" is returned.

  [cTitle] is a string placed at the top of the popup
  box for a title

  [nTop,nLeft,nBottom,nRight] are the coordinates of
  the box

  Examples:
  ---------
   // this selects memo field to edit

   use customer

   cField := mfieldstype("M")

   if !empty(cField)
      memoedit(FIELDGET(FIELDPOS(cField)),0,0,24,79)
   endif

  Source:
  -------
  S_MFLDT.PRG