[o]

[..]
  1. off_t
  2. offsetof
  3. old_stat
  4. old_utsname
  5. oldold_utsname
  6. oom
  7. open
  8. open_aux
  9. open_inode
  10. open_mouse
  11. open_namei
  12. open_qp
  13. operand_selector
  14. opl3_aftertouch
  15. opl3_close
  16. opl3_command
  17. opl3_controller
  18. opl3_detect
  19. opl3_hw_control
  20. opl3_init
  21. opl3_ioctl
  22. opl3_kill_note
  23. opl3_load_patch
  24. opl3_open
  25. opl3_panning
  26. opl3_patchmgr
  27. opl3_reset
  28. opl3_set_instr
  29. opl3_start_note
  30. options
  31. origin
  32. out_port_type
  33. outb
  34. outb_p
  35. outl
  36. output_byte
  37. output_ready
  38. outsw
  39. outw
  40. outw_p
  41. overlap
  42. override
[..]