Does pcap_open_offline (pcap_dump_open) function overwrite or append?

I can't find in the documentation where the mode of the open file (overwrite vs. append) is specified.

• pcap_open_offline
• pcap_dump_open

Thank you for clarification.

1. You meant pcap_dump_open().
2. It overwrites; pcap_dump_open_append() appends.