Abstract
This study to make clear the syntax, relation of signs, about "MAN-MACHINE INTERFACE OF PRODUCT". Centering the signs of manipulations, and thinking over the relation of signs before and behind, I build up a hypothesis. I get the syntax pattern of figure 2 by verification of the manual, "CANON AUTO BOY 3". "A" and "B" in figure 2 are the case in which signs appear independently. "A" show the details of manipulation. In case "C", signs of manipulation appear behind signs of manipulation, and "C" show the shift of manipulation. In case "D", signs before signs of it show the meaning of state, condition, case, and purpose, and "D" show manipulations in some conditions. "E" show actions of machines in some conditions. And "F" show manipulations and its results. Case "G", is one of the case, in which different signs indicate same object, and shows signs of result are signs of conditions.
