[O]

1. O
2. OBSOLETE_GUS_PATCH
3. OCRNL
4. OF
5. OFDEL
6. OFF
7. OFFCNT
8. OFFSET_MAX
9. OFFS_4OP
10. OFILL
11. OGMB_CNT
12. OID
13. OID_
14. OK
15. OLCUC
16. OLD_GZIP_MAGIC
17. OLD_SIOCGIFHWADDR
18. OMAGIC
19. ON
20. ONLCR
21. ONLRET
22. ONOCR
23. OPEN_MAX
24. OPEN_READ
25. OPEN_READWRITE
26. OPEN_WRITE
27. OPERATION_MODE_1
28. OPERATION_MODE_2
29. OPL3_BOTH
30. OPL3_ENABLE
31. OPL3_LEFT
32. OPL3_MODE_REGISTER
33. OPL3_PATCH
34. OPL3_RIGHT
35. OPOST
36. OPSW
37. OPTIMIZE_FLAG_TIME
38. OPT_ADLIB
39. OPT_AUDIO
40. OPT_GUS
41. OPT_GUS16
42. OPT_GUSMAX
43. OPT_HIGHLEVEL
44. OPT_LAST
45. OPT_LAST_MUTUAL
46. OPT_MIDI
47. OPT_MIDI_AUTO
48. OPT_MPU401
49. OPT_MSS
50. OPT_PAS
51. OPT_PSS
52. OPT_SB
53. OPT_SB16
54. OPT_SBPRO
55. OPT_SEQUENCER
56. OPT_UART6850
57. OPT_YM3812
58. OPT_YM3812_AUTO
59. OP_HOST_ADAPTER
60. OP_RESET
61. OP_SCSI
62. OP_SIZE_PREFIX
63. ORDERED_QUEUE_TAG
64. ORIG_EAX
65. ORIG_NAME
66. ORIG_ROOT_DEV
67. ORIG_VIDEO_COLS
68. ORIG_VIDEO_EGA_AX
69. ORIG_VIDEO_EGA_BX
70. ORIG_VIDEO_EGA_CX
71. ORIG_VIDEO_LINES
72. ORIG_VIDEO_MODE
73. ORIG_VIDEO_PAGE
74. ORIG_X
75. ORIG_Y
76. OUT
77. OUTB
78. OUTBUFSIZ
79. OUTBUF_EXTRA
80. OUTPUT_ATTEN_MASK
81. OUTPUT_DATA_REG
82. OUTPUT_MUTE
83. OUTPUT_MUTE_MASK
84. OUTPUT_READY
85. OUT_FILTER
86. OUT_ON_PORT
87. OVERRANGE_LEFT_MASK
88. OVERRANGE_RIGHT_MASK
89. O_ACCMODE
90. O_APPEND
91. O_BSDLY
92. O_CRDLY
93. O_CREAT
94. O_EXCL
95. O_FFDLY
96. O_M_1_CDROM_TYPE
97. O_M_1_FM_TYPE
98. O_M_1_PCM_TYPE
99. O_M_2_BOARD_REVISION
100. O_M_2_BUS_TIMING
101. O_M_2_PCS_ENABLED
102. O_NDELAY
103. O_NLDLY
104. O_NOCTTY
105. O_NONBLOCK
106. O_OCRNL
107. O_OFDEL
108. O_OFILL
109. O_OLCUC
110. O_ONLCR
111. O_ONLRET
112. O_ONOCR
113. O_OPOST
114. O_RDONLY
115. O_RDWR
116. O_SYNC
117. O_TABDLY
118. O_TRUNC
119. O_VTDLY
120. O_WRONLY