The document provides a diagram of keyboard keys and their functions. The keyboard is divided into sections for function keys like Escape and Tilde at the top, alphanumeric and punctuation keys in the middle, and special keys like arrow keys, page keys and number pad keys at the bottom. Each key is labeled with its name and keyboard shortcut if applicable.

2.  12 13 15 18
 17




16
     19
11 14
Escape Tilde Tab Caps
Lock
Shift Ctrl Alt Space
bar
Enter Back space
Delete Insert
Page Page
Home End Up Down
Num Print Screen Arrow key
Lock

3. Escape

4. Tilde

5. Tab

6. Caps Lock

7. Shift

8. Ctrl
< Ctrl> O

9. Alt
< Alt> F4

10. Space bar

11. Enter

12. Back space

13. Delete

14. Insert

15. Home

16. End

17. Page Up

18. Page Down

19. Num Lock
Num Lock

20. Print Screen

21. Arrow key