If you see other terms in similar filenames, they usually refer to:
: Subtitles that only appear when a foreign or alien language is spoken. subtitle Halloween.Kills.2021.EXTENDED.SLOSubs....
: Subtitles for the Deaf and Hard of Hearing, which include sound effects in brackets (e.g., "[door creaks]"). If you see other terms in similar filenames,
: Indicates the subtitle is synced for the longer cut of Halloween Kills (2021), which includes extra scenes not found in the original theatrical version. subtitle Halloween.Kills.2021.EXTENDED.SLOSubs....