code: func NewCustom(init *InitType) (f *Fpdf) {
  	return fpdfNew(init.OrientationStr, init.UnitStr, init.SizeStr, init.FontDirStr, init.Size)
  }
docs: // NewCustom returns a pointer to a new Fpdf instance. Its methods are
  // subsequently called to produce a single PDF document. NewCustom() is an
  // alternative to New() that provides additional customization. The PageSize()
  // example demonstrates this method.