Hello. I'm not a developer, but I need help trying to edit an opk file containing image files for an old (1999). In the past, the installer would install image files that players could open and customize their own skins using the typical image editors. It looks like they now changed it and included each set of files into their own “opk" file package. I found a program that allows you to look inside the opk file, but there are no options to edit it, so I'm hoping someone here knows a thing or 2 about these. Thanks

I included a sample file: https://easyupload.io/ckexuj