Use this menu to open and edit the symbol catalogue, or import an external formula as a data file. The program interface can be adjusted to meet your requirements. You can also change the program options.
使用此菜单可以打开和编辑符号分类，或者将一个外部公式作为数据文件导入。您既可根据自己的需求调整程序的界面，也可以修改程序的选项。