1, beginning with F:
F1: Get help.
F2: The ladder diagram enters the edit mode.
F3: The ladder diagram enters the operation mode.
F4: Compile the program.
F5: Normally open contact input.
F6: Normally closed contact input.
F7: Coil output.
F8: Function command input.
F9: Horizontal line input.
2, Shift related:
Shift+F3: The ladder diagram enters the monitor mode (can be edited online).
Shift+F5: Parallel normally open contact input.
Shift+F6: Parallel normally closed contact input.
Shift+F9: Vertical line input.
Shift+delete: Deletes the content of the line where the cursor is located.
Shift+insert: Insert a row.
3, Ctrl related:
Ctrl+F: Find devices and addresses.
Ctrl+F10: Delete the vertical line.
Ctrl+Alt+F10: Invert the instruction input.
4, ALT related:
ALT+F1: Switch to statement table mode.
ALT+1: Device test (valid in monitor mode).
5. Other related:
Insert: The color of the cursor box turns red and can be inserted into a single component.
Delete: delete the current component and line.