What does OPAC stand for?

The term OPAC stands for Online Public Access Catalog, which refers to a computerized system that allows library users to search for books, journals, and other resources available in a library. OPACs are accessible via the internet or local networks, enabling patrons to browse the catalog from various devices. They provide an efficient way for users to check the availability of materials, place holds, and sometimes even renew loans, making library resources more accessible.

This answer highlights the significance of OPAC in modern library systems, emphasizing its role in enhancing user experience and promoting transparency in library holdings. The other options represent variations that are not widely recognized or used within library and information science contexts.