Extras are additional files for the skin, changing some elements of it, such as
the hitcircles, the cursor, and more!

Each folder is 1 Extra. To apply an Extra:

1. Open the folder of the Extra you want.

2. Copy ALL files on it (except the files starting by a '!').

3. Paste the files in the skin's root folder.

4. If there's a '!INSTRUCTIONS.txt', there's specific manipulations to do.
Just follow them.

5. If there's a '!SKIN.INI_VALUES.txt', you will have to edit manually the
skin.ini file in the skin's root folder too. Open the file with a text editor.
* Text in [] represents the beginning a section.
* Each other line is in the format '<Setting>: <Value>'.
For specific sections, you will have some settings with a specified value.
For each setting, find it inside the skin.ini, then replace the value by the
one given inside the '!SKIN.INI_VALUES.txt' file.
If the setting doesn't exists, add it (still in the correct section), with the
value given in the '!SKIN.INI_VALUES.txt' file.

/!\ If the Extra contained an skin.ini file, custom skin.ini values may has
been overwritten. If you used another Extra which included a
'!SKIN.INI_VALUES.txt' file, repeat step 5 for each Extra with such a file
to ensure that everything works properly.