 Many Indonesian batik patterns are symbolic . Infants are carried in batik slings decorated with symbols designed to bring the child luck , and certain batik designs are reserved for brides and bridegrooms , as well as their families . Some designs are reserved for royalties , and even banned to be worn by commoners . Consequently , a person 's rank could be determined by the pattern of the batik he or she wore . Further study to the geometry of symbolism in Indonesian batik showed the applicability of fractal geometry in traditional designs . 
