It was a very useful lecture that introduced me to a new weapon called Atom.. I was using Sublime Text 3, and it feels like I have a new weapon called Atom in my hands! I should use it well while comparing it to Sublime.. I'm going to finish the useful lecture! However, at the end of the lecture, there were packages that can be used in the actual field, although they were not detailed. I don't know about those two things.. I have to Google them again.. Thank you so much, Mr. Egoing.. Take good care of your voice...