The solid and broken bars in the eight image tiles in the top navigation are called trigrams. The octagonal trigram pattern is a common symbol for the Chinese term Bagua. The pattern has eight (ba) areas (guas). "South" is always found at the top of the Bagua. Each trigram represents a particular natural phenomena: Sky ☰, Lake ☱, Fire ☲, Thunder ☳, Wind ☴, Water ☵, Mountain ☶, Earth ☷. If you click on a trigram, it will take you to the corresponding taekwondo form page. Each form has a trigram which I describe scientifically and call scigrams. The tangram animation in the middle of the trigram tiles is supposed to represent a kicking woman. A tangram is a puzzle which originated in China. It is created out of seven flat polygons that can be put together to form shapes.