.ini or .cfg files that store user settings, button mappings, and video preferences.
The "8sk" suffix often appears in community-modified versions of emulators, sometimes associated with specific "skins," "sketches," or developer handles. Since I cannot open the file directly, here is the general context of what a "Nester" zip file typically contains: Nester8sk_Old.zip
Supporting files required for the emulator to interface with your hardware. sometimes associated with specific "skins
Are you trying to with this version of Nester, or Nester8sk_Old.zip
If you are looking for a specific text output from the zip, such as a or a license agreement , you will need to extract the archive on your device and open the .txt or .doc files located inside.