code: func (f *Fpdf) Cellf(w, h float64, fmtStr string, args ...interface{}) {
  	f.CellFormat(w, h, sprintf(fmtStr, args...), "", 0, "L", false, 0, "")
  }
docs: // Cellf is a simpler printf-style version of CellFormat with no fill, border,
  // links or special alignment. See documentation for the fmt package for
  // details on fmtStr and args.