The first season features personal stakes, such as DI Vera Stanhope returning to a location from her past in the episode "The Crow Trap". Technical Context (HDTV.XviD)
Regarding "useful features," this may refer to the technical aspects of the file format or specific highlights of the series itself: Series Highlights ("Useful" Narrative Features) Vera.S01.HDTV.XviD
The filename suggests a specific digital distribution format common in the early 2010s (the season originally aired in 2011): The first season features personal stakes, such as
An open-source MPEG-4 video codec. Its primary "useful feature" is maintaining reasonable video quality while keeping file sizes small enough to fit a standard episode onto older storage media like CDs or play on legacy hardware. The first season features personal stakes