This debug command will highlight all provinces that would be classified as an island under the specified threshold (as in, those that the 'Province is on an island' condition would apply to).
Threshold Number | The threshold for classification of a country as an island. All countries below this limit will be highlighted. Unit is pixels. |
The highlight_islands command in EU4 is a debugging command used by game developers for specific testing purposes.
If this command is followed by a specified number, it will highlight all the provinces in the game that will be categorized as 'islands' if the size limit for what is considered an island is set to that number in the game's configuration files, specifically in defines.lua.
In EU4, cheats are executed from the command console, a text box that you type commands into.
To open the command console press the ~(tilde) key, which is typically located under ESC (escape).
If your keyboard does not have that key, or pressing ~ does not work, try the following keys:
Type your command into the console, and then press ENTER .