[O]

1. OBSTACK_CHUNK_ALLOC
2. OBSTACK_CHUNK_FREE
3. OBSTACK_CHUNK_SIZE
4. OCF_RA_PATH
5. OCF_ROOT_DIR
6. OFFLINESTATUS
7. OFFSET
8. OFFSET_MAX
9. OFFSET_T
10. OK_LEAF_OPTIMIZATION
11. OLD_ACE_GROUP
12. OLD_ACE_OTHER
13. OLD_ACE_OWNER
14. OLD_ALLOW
15. OLD_DENY
16. ONCE_FLAG_INIT
17. ONE
18. ONLINESTATUS
19. OP
20. OPAD
21. OPENAT_BUFFER_SIZE
22. OPENSSL_ALG
23. OPENSSL_FN
24. OPEN_MAX_MAX
25. OPSIZ
26. OPTARGS
27. OPTIND_MIN
28. OPTION_ALIAS
29. OPTION_ARG_OPTIONAL
30. OPTION_DOC
31. OPTION_HIDDEN
32. OPTION_NO_TRANS
33. OPTION_NO_USAGE
34. OPT_DOC_COL
35. OPT_HANG
36. OPT_LPAREN
37. OPT_PROGNAME
38. OPT_QUEUED
39. OPT_REPEAT
40. OPT_RPAREN
41. OPT_USAGE
42. OPT_WALKED
43. OP_ALT
44. OP_BACK_REF
45. OP_CHARSET_RANGE
46. OP_CLOSE_BRACKET
47. OP_CLOSE_CHAR_CLASS
48. OP_CLOSE_COLL_ELEM
49. OP_CLOSE_DUP_NUM
50. OP_CLOSE_EQUIV_CLASS
51. OP_CLOSE_SUBEXP
52. OP_DUP_ASTERISK
53. OP_DUP_PLUS
54. OP_DUP_QUESTION
55. OP_NON_MATCH_LIST
56. OP_NOTSPACE
57. OP_NOTWORD
58. OP_OPEN_BRACKET
59. OP_OPEN_CHAR_CLASS
60. OP_OPEN_COLL_ELEM
61. OP_OPEN_DUP_NUM
62. OP_OPEN_EQUIV_CLASS
63. OP_OPEN_SUBEXP
64. OP_PERIOD
65. OP_SPACE
66. OP_T_THRES
67. OP_UTF8_PERIOD
68. OP_WORD
69. OR
70. OS2
71. OSET_TREE_FLAVOR
72. OSF_ALPHA
73. OSF_MIPS
74. OSVERSIONINFO
75. OVERLOADED_CHECK
76. O_ACCMODE
77. O_BINARY
78. O_CIB_RESTART
79. O_CLOEXEC
80. O_DC_TIMER_RESTART
81. O_DIRECT
82. O_DIRECTORY
83. O_DSYNC
84. O_EXEC
85. O_EXIT
86. O_IGNORE_CTTY
87. O_LARGEFILE
88. O_LRM_RECONNECT
89. O_NDELAY
90. O_NOATIME
91. O_NOCTTY
92. O_NOFOLLOW
93. O_NOLINK
94. O_NOLINKS
95. O_NONBLOCK
96. O_NOTRANS
97. O_PE_RESTART
98. O_RELEASE
99. O_RSYNC
100. O_SEARCH
101. O_SYNC
102. O_TEXT
103. O_TE_RESTART
104. O_TTY_INIT