Many forums use these codes as thread titles where fans discuss the specific merits of that volume or performance. Many forums use these codes as thread titles

These are indexing numbers. Much like an ISBN for a book or a SKU for a retail product, these alphanumeric codes help users find a specific file in a vast library. "031" likely refers to the volume or episode number, while "avi006" often denotes a specific scene or a technical file version. The Role of Naming Conventions in Digital Archiving noeru natsumi god 031 avi006

In niche media, content can often become "lost media." Maintaining these codes allows archivists to track what has been preserved and what is missing. The Cultural Impact

Numerical identifiers (like 031) allow for easy sorting.