[A]

1. AB
2. ABORT
3. ABORTED_COMMAND
4. ABORT_TIMEOUT
5. ABRT_ERR
6. ABT
7. ACC_MODE
8. ACK_FIRST
9. ACK_SECOND
10. ADD64
11. ADDRESS_COUNT
12. AF_INET
13. AF_UNIX
14. AF_UNSPEC
15. AHA1542
16. ALLOW_ALL_IRQ
17. ALLOW_MEDIUM_REMOVAL
18. ALT
19. ALTGR
20. AM
21. ANYINTR
22. AR
23. ARBITRATE
24. ARG_MAX
25. ARP_DEBUG
26. ARP_IP_PROT
27. ARP_REPLY
28. ARP_REQUEST
29. ARP_RES_TIME
30. ARP_TABLE_SIZE
31. ARP_TIMEOUT
32. ARRAY_SIZE
33. ARUNT
34. ASC_INI
35. ASC_RES
36. ASC_STAT
37. ASYNC_FOURPORT
38. ASYNC_NOSCRATCH
39. ASYNC_SPD_CUST
40. ASYNC_SPD_HI
41. ASYNC_SPD_MASK
42. ASYNC_SPD_VHI
43. ATD
44. ATTR_ARCH
45. ATTR_DIR
46. ATTR_HIDDEN
47. ATTR_NONE
48. ATTR_RO
49. ATTR_SYS
50. ATTR_UNUSED
51. ATTR_VOLUME
52. AT_IMR
53. AUX_BUF_SIZE
54. AUX_COMMAND
55. AUX_DEVICE_INFO
56. AUX_INPUT_PORT
57. AUX_IRQ
58. AUX_OUTPUT_PORT
59. AUX_STATUS