[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. OK_LEAF_OPTIMIZATION
10. OLD_ACE_GROUP
11. OLD_ACE_OTHER
12. OLD_ACE_OWNER
13. OLD_ALLOW
14. OLD_DENY
15. ONCE_FLAG_INIT
16. ONE
17. ONLINESTATUS
18. OP
19. OPAD
20. OPENAT_BUFFER_SIZE
21. OPENSSL_ALG
22. OPENSSL_FN
23. OPEN_MAX_MAX
24. OPSIZ
25. OPTARGS
26. OPTIND_MIN
27. OPTION_ALIAS
28. OPTION_ARG_OPTIONAL
29. OPTION_DOC
30. OPTION_HIDDEN
31. OPTION_NO_TRANS
32. OPTION_NO_USAGE
33. OPT_DOC_COL
34. OPT_HANG
35. OPT_LPAREN
36. OPT_PROGNAME
37. OPT_QUEUED
38. OPT_REPEAT
39. OPT_RPAREN
40. OPT_USAGE
41. OPT_WALKED
42. OP_ALT
43. OP_BACK_REF
44. OP_CHARSET_RANGE
45. OP_CLOSE_BRACKET
46. OP_CLOSE_CHAR_CLASS
47. OP_CLOSE_COLL_ELEM
48. OP_CLOSE_DUP_NUM
49. OP_CLOSE_EQUIV_CLASS
50. OP_CLOSE_SUBEXP
51. OP_DUP_ASTERISK
52. OP_DUP_PLUS
53. OP_DUP_QUESTION
54. OP_NON_MATCH_LIST
55. OP_NOTSPACE
56. OP_NOTWORD
57. OP_OPEN_BRACKET
58. OP_OPEN_CHAR_CLASS
59. OP_OPEN_COLL_ELEM
60. OP_OPEN_DUP_NUM
61. OP_OPEN_EQUIV_CLASS
62. OP_OPEN_SUBEXP
63. OP_PERIOD
64. OP_SPACE
65. OP_T_THRES
66. OP_UTF8_PERIOD
67. OP_WORD
68. OR
69. OS2
70. OSET_TREE_FLAVOR
71. OSF_ALPHA
72. OSF_MIPS
73. OSVERSIONINFO
74. OUR_NODENAME
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