What is the @ in the folder name？

I found a @ before one of the folder name in the source code.

The folder name is same with a class name inside the folder.

And the class is used like:

ori=OrigamiSolver;

The code will not work is the @ is removed.

Answer 1

[Walter Roberson]

It is a class folder; see https://www.mathworks.com/help/matlab/matlab_oop/organizing-classes-in-folders.html

[Zeyuan Peng]

Thank you!