Reading local text documents within the Roblox content folder

Through messing around, I’ve found out that you’re able to add folders and files to the default Roblox content folder and use sound and image files via rbxasset:// without issue. However, I’m attempting to read text documents, or any file other than sound, image or video files, and I can’t quite figure out a way. I’ve come here to ask if anyone has any ideas or solutions to this.