This indicates that the file contains three sets of subtitles (possibly English, Hindi, and another regional language).
This identifies the film as the original Alien , released in 1979. The use of the "!" is a common "leet-speak" tactic used by uploaders to help files bypass automated filters or to give the release a unique signature. Al!en.1979.DC.720p.BluR@y.HIN-3NG.x264.3$ub-K@t...
Filenames like this are the "DNA" of digital preservation. They allow collectors to know exactly what they are getting—the version of the film, the language options, and the technical quality—before they ever hit "play." It’s a shorthand language born out of the early internet that continues to be the standard for cataloguing cinema in the digital age. This indicates that the file contains three sets