If you are referring to the archived files sometimes linked to systems like the or RA-XT (as indicated in technical manuals on Scribd ), its "best feature" is typically its ability to store and manage complex chemistry parameters and immunoassay methods for random-access clinical analyzers.

However, in common computing contexts, "EXOME.rar" could be one of several things:

If found on a gaming site, it may be a compressed archive for a specific game or mod. In this case, the "feature" is its high compression ratio, which saves disk space.