code: func (f *Fpdf) LineTo(x, y float64) {
  	f.outf("%.2f %.2f l", x*f.k, (f.h-y)*f.k)
  	f.x, f.y = x, y
  }
docs: // LineTo creates a line from the current stylus location to (x, y), which
  // becomes the new stylus location. Note that this only creates the line in
  // the path; it does not actually draw the line on the page.
  //
  // The MoveTo() example demonstrates this method.