code: func CharacterHref(c rune) string {
  	switch {
  	case '1' <= c && c <= '9':
  		return PaletteHref(3, int(c-'1'))
  	case 'A' <= c && c <= 'Z':
  		return PaletteHref(5, int((c-'A')%8+16*((31-c+'A')/8)))
  	default:
  		return ""
  	}
  }
docs: // CharacterHref returns the href of the icon wirh the specificed character, or
  // an empty string if no such icon exists. See
  // http://kml4earth.appspot.com/icons.html#pal3 and
  // http://kml4earth.appspot.com/icons.html#pal5.