GRPH1 With the thickness and color of the line segment that are painted are designated with the integers (nnm) of 3 of columns called line index. Even in the case that only house which or one of the thickness and color of a line output it to the such device that is changed as line index is able to identify 2 lines that differ, to do The line index is associated to thickness and color in accordance with the following rule.
In the such system that both thickness and color of a line are changed an upper class 2 column (nn=0-99) a color number, subordinate position 1 column (m=0-9) show the thickness of a line. Color number be in standard from 1 to 5
| 1: | White or black (the foreground) |
| 2: | Red |
| 3: | Green |
| 4: | Blue |
| 5: | Yellow |
Although it is decided that than it regarding a bigger number. It depends on the definition of a colormap file. Also m: 1 (Hoso) -It is > 9 (wide). It limits at the time of m=0, in the such output unit that the thickness of only a line is changed and read nn as a m and change it. Also, it limits at the time of nn=0, in the such output unit that the color of only a line is changed and read a m as nn and change it. Therefore a line segment becomes possible to an apparatus identification by a characteristic method in the meantime, if exception designates the line index of 1 column when I want to explicate the thickness and color of a line.