PDF/Manual Reader for Magazines, Comics, Guides, etc?

Howdy all, hope this is the proper section for what I'm asking.

The manual reader that opens the pdf manuals is pretty great. I'm wondering if it'd be possible to use it to open other media in a section similar to roms. I realize I'd have to convert CBZ and such to PDF but that's no bother really. Only thing is I can't figure out what exactly is opening the PDFs so I can't hardly add a section for PDFs. I did experiment a little and spoofed an issue of nintendo power as a manual for mario. It opened, looked, controlled by controller, and closed fine.

It'd be pretty great to add a section in roms for digitized paper media. I thought it'd be simple enough but for the life of me I can't seem to launch any PDF with whatever viewer is being used in RetroBat outside of making RB think it's a manual.

Cheers buds.

Hello
There is a folder "medias" that allow you to place digital content on Retrobat. Don't remember if it automatically created, or if it have to be activated... But if you look to the es-systems.cfg, you will see.