| 摘要 |
PURPOSE:To store efficiently data which has graphic expression and where a specific graphic expression appears repeatedly by introducing a function or the like which handles a set of a graphic definition item, an occurence with argument, and plural occurence as one occurence. CONSTITUTION:A data defining language translating program is stored in a main memory 1, and a CPU2 decodes and executes the program. Variable declaration, occurrence declaration, general graphic definition, attribute declaration, relation definition, detailed graphic definition etc. are programmed as data definition statements with control instruction. The function to use the occurrence with argument is provided, and a proper value is substituted into an argument to allow it to appear repeatedly, and the occurrence expressing an actual body having an internal structure is described and is used as a parameter. It is discriminated whether the variables are declared or defined in the data defining instruction statements of a main memory 1 or not; and if they are declared or defined, the processing of declaration or definition is performed. |
