Are you asking about the of multi-part archive files (like .rar parts) and how they work?
It looks like that specific text——refers to a specific file fragment from a pirated or "cracked" version of the virtual reality game Medal of Honor: Above and Beyond .
Because this query could be interpreted in a few different ways, could you clarify what you are looking for? For example:
Or are you interested in a discussion regarding the like VREX in the gaming community?