This is the sequential volume or release number within that specific series.

Content enthusiasts use these "magic numbers" or codes for several reasons:

Databases on sites like MGS Video Store or enthusiast forums use these identifiers to link to cast lists, release dates, and director information.

Since codes following this specific alphanumeric pattern (4-5 letters followed by a dash and numbers) are almost exclusively used for , you should exercise caution when searching for this file on public or work-related networks. Links associated with these IDs often lead to unofficial streaming sites or third-party file hosts that may contain intrusive ads or malware.

It is much easier to find a specific video using a unique code like DLDSS-157 than a descriptive title, which may be translated differently across various platforms.