[o]

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