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PhpStorm: what does it mean the name of the folder in square brackets along with the name of a folder?

The root of my PhpStorm projects is app-project-name-www.

In all my other projects, PhpStorms shows the root with this name:

app-project-name-www [app-project-name-www]

In this project, instead, it adds the square brackets to the tests folder, like you can see in the image below.

Questions

  1. What does it indicate the name in the square brackets?
  2. How does it call PhpStorm? (I'm not able to search for info in Google as I don't know what to search for)
  3. How to put this name again along with the root folder, removing it from the tests folder?

Current PhpStorm version: 2020.1.3

enter image description here

Solution

  • These brackets likely indicate that your tests folder is added as an additional content root to your project. Check Preferences | Directories