C-Plus-Plus VS coding-interview-university

in this repo https://github.com/TheAlgorithms/C-Plus-Plus most of the algorithms using @param or @returns and so on. i cant find any documentation on internet about @.Is this some built-in thing in c++ or the project defined like that. Can anybody help me please ?

C++: https://github.com/TheAlgorithms/C-Plus-Plus/blob/master/sorting/merge_sort.cpp

✅ jwasham/coding-interview-university : https://github.com/jwasham/coding-interview-university

4) Coding Interview University: Conquer the dreaded coding interview with this battle-tested arsenal of algorithms, data structures, and interview prep strategies. Sharpen your problem-solving skills, optimize your coding efficiency, and ace those technical assessments with this invaluable resource. (https://github.com/jwasham/coding-interview-university)

View on GitHub

I stumbled upon a github post called coding interview university and with the shiny object syndrome I have, I kinda want to ditch the roadmaps and start something new like this one in github, or the random dude I found in YouTube, telling his audience that he passed the FAANG interviews. The annoying part of me is that whenever I hear stuff like “I passed the FAANG”, I will immediately try to follow their path because their method works for them or to some other people