In Windows system, forward slash/stands for division and is used for division. A backslash \ is used to indicate a directory.

2. Differences in 2.Unix systems

/indicates the directory; \ indicates that escape characters change special characters into universal characters (such as carriage return, $,spaces, etc.). ).

Common windows menu item symbols have the following meanings:

1, the grayed-out menu command indicates that it is currently unavailable;

2. When the menu with "…" indicates execution, a dialog box will be displayed;

3. Check that there is "√" in front of the menu;

4. There is "●" in front of the radio menu;

5, with "?" The triangle menu is a cascading menu, that is, there are also menus under the menu;

6. Menu items with shortcut key descriptions indicate that menu commands can be completed by using combination shortcut keys.