Comma(,) and dot (.) cycle through active brush. 逗号(,)和点号(。)循环选择笔刷。
All these signals are standardized by CCIR-D. The module can generate a set of symbols and graphics including dot, cycle, arc, vector, standard character set, special characters and Chinese characters. It can provide the operation of rotation and zoom. 它能够产生包括点、圆、弧、矢量、标准字符、专用符号及汉字在内的图形及符号,还可进行图象的旋转、缩放。