[o]

1. off_from_header
2. old_color_comparator
3. old_cpio_header
4. oldgnu_add_sparse
5. oldgnu_add_status
6. oldgnu_fixup_header
7. oldgnu_get_sparse_info
8. oldgnu_header
9. oldgnu_sparse_member_p
10. open_include_file
11. open_temp
12. opendir
13. operate_one_file
14. operate_single_file
15. order
16. other_panel
17. output_format_t
18. overwrite_query_dialog