[A]

1. ABORT
2. ABORTED_COMMAND
3. ABORT_TIMEOUT
4. ABRT_ERR
5. ACC_MODE
6. ACK_FIRST
7. ACK_SECOND
8. ADD64
9. ADDRESS_COUNT
10. AF_INET
11. AF_UNIX
12. AF_UNSPEC
13. AHA1542
14. ALLOW_ALL_IRQ
15. ALLOW_MEDIUM_REMOVAL
16. ALT
17. ALTGR
18. ANYINTR
19. ARBITRATE
20. ARG_MAX
21. ARRAY_SIZE
22. ASC_INI
23. ASC_RES
24. ASC_STAT
25. ATTR_ARCH
26. ATTR_DIR
27. ATTR_HIDDEN
28. ATTR_NONE
29. ATTR_RO
30. ATTR_SYS
31. ATTR_UNUSED
32. ATTR_VOLUME
33. AT_IMR