: avsmuseum likely refers to an "Aviation," "Audio-Visual," or "Art" Museum, with 100359 being a specific catalog or accession number for an artifact.
Short for "Updated." This indicates that the file has undergone a revision process to fix bugs, improve compatibility, or refresh content.
Words like "upd" (update) and "best" usually indicate a stable, optimized release meant for public rollout rather than a beta test. The Importance of Keeping Systems Updated