code: public void init(ScreenLoc itsLocation, ComponentParent parentScreen, Convert converter, int iDisplayFieldDesc, Map<String, Object> properties)
      {
          this.init(null, null, null, null, null, null, false, null, null);
      }
docs: Initialize.
  @param itsLocation The location of this component within the parent.
  @param parentScreen The parent screen.
  @param fieldConverter The field this screen field is linked to.
  @param iDisplayFieldDesc Do I display the field desc?