The file could be related to a few different things, and the process for "creating a feature" depends on which one you mean:
Could you clarify what kind of you are trying to create and what software you are using to open that .rar file? VTcS2.rar
That's a very specific file name! To make sure I'm giving you the right steps, I need a little more information. The file could be related to a few
: Does this involve adding a feature to how you manage or pack .rar files within a specific utility? VTcS2.rar
: Is this a source code archive where you want to add a new functional feature to the program?