On forums and imageboards, these codes are used as shorthand to discuss specific releases or request "re-ups" of older, hard-to-find content. Technical Context: The .AVI Format
This represents the specific volume or series number. "AL" could stand for "Alina" or a specific series line, with "05" denoting it as the fifth entry. Alina: The name of the featured performer or model. YVM-AL05-Alina.avi
To understand what this keyword represents, one must break down its structured nomenclature: On forums and imageboards, these codes are used