1 Signs are clustered in a number of systems . Thus there are systems of gesticulatory signs , of patterned bodily movements , of various sets of material artifacts , and so on .

符号聚集于一些系统之中。故而有姿态的符号体系，有些是由身体的动作型态形成的，有些则是由物质的人为制品体系形成等。