Add updated versions of the info removed in #10431

User-and-Data-Folders.md

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+## Sys Files
+
+* `wiitdb-*.txt`: Gamecube and Wii language-specific title databases from [GameTDB](https://www.gametdb.com/)
+* `totaldb.dsy`: Database of symbols (for devs only)
+* `GC/font_western.bin`: font dumps
+* `GC/font_japanese.bin`: font dumps
+* `GC/dsp_coef.bin`: DSP dumps
+* `GC/dsp_rom.bin`: DSP dumps
+
+The DSP dumps included with Dolphin have been written from scratch and do not
+contain any copyrighted material. They should work for most purposes, however
+some games implement copy protection by checksumming the dumps. You will need
+to dump the DSP files from a console and replace the default dumps if you want
+to fix those issues.
+
+Wii network certificates must be extracted from a Wii IOS. A guide for that can be found [here](https://wiki.dolphin-emu.org/index.php?title=Wii_Network_Guide).
+
+## Folder Structure
+
+These folders are installed read-only and should not be changed:
+
+* `GameSettings`: per-game default settings database
+* `GC`: DSP and font dumps
+* `Maps`: symbol tables (dev only)
+* `Shaders`: post-processing shaders
+* `Themes`: icon themes for GUI
+* `Resources`: icons that are theme-agnostic
+* `Wii`: default Wii NAND contents
+
+## Packaging and udev
+
+The Data folder contains a udev rule file for the official GameCube controller
+adapter and the Mayflash DolphinBar. Package maintainers can use that file in their packages for Dolphin.
+Users compiling Dolphin on Linux can also just copy the file to their udev
+rules folder.
+
+## User Folder Structure
+
+A number of user writeable directories are created for caching purposes or for
+allowing the user to edit their contents. On macOS and Linux these folders are
+stored in `~/Library/Application Support/Dolphin/` and `~/.dolphin-emu`
+respectively, but can be overwritten by setting the environment variable
+`DOLPHIN_EMU_USERPATH`. On Windows the user directory is stored in the `My Documents`
+folder by default, but there are various way to override this behavior:
+
+* Creating a file called `portable.txt` next to the Dolphin executable will
+  store the user directory in a local directory called "User" next to the
+  Dolphin executable.
+* If the registry string value `LocalUserConfig` exists in
+  `HKEY_CURRENT_USER/Software/Dolphin Emulator` and has the value **1**,
+  Dolphin will always start in portable mode.
+* If the registry string value `UserConfigPath` exists in
+  `HKEY_CURRENT_USER/Software/Dolphin Emulator`, the user folders will be
+  stored in the directory given by that string. The other two methods will be
+  prioritized over this setting.
+
+List of user folders:
+
+* `Cache`: used to cache the ISO list
+* `Config`: configuration files
+* `Dump`: anything dumped from Dolphin
+* `GameSettings`: additional settings to be applied per-game
+* `GBA`: GBA saves
+* `GC`: memory cards and system BIOS
+* `Load`: custom textures
+* `Logs`: logs, if enabled
+* `Maps`: Symbol maps generated by Dolphin
+* `ResourcePacks`: A way of managing custom textures, separate from the Load directory
+* `ScreenShots`: screenshots taken via Dolphin
+* `Shaders`: post-processing shaders
+* `StateSaves`: save states
+* `Styles`: color themes for GUI
+* `Themes`: icon themes for GUI
+* `Wii`: Wii NAND contents
+
+## Custom Textures (Not Resource Packs)
+
+Custom textures have to be placed in the user directory under
+`Load/Textures/[GameID]/`. You can find the Game ID by right-clicking a game
+in the ISO list and selecting "ISO Properties".