The localization system works with a Localization.txt file with this structure:

KEY,English,Francais

For example, if we wanted to localize our main menu's title, we would add this line in the Localization.txt file:

MainMenu_Title, "Main Menu", "Menu Principal"

Let's create this localization file. Navigate to your project's Assets folder and create a new Resources folder. Inside this new folder, create a new Localization.txt file and open it. Add these lines in it:

KEY,English,Francais
Francais, "French", "Francais"
English, "English", "Anglais"
MainMenu, "Main Menu", "Menu Principal"

On the first highlighted line, we define our two languages. The next three lines define our localization keys and their two different values: one in English and the other in French.

OK, the localization file is ready. Now, let's see how to assign a key to a label...