That's actually true and I also realized how to do it myself. Most people consider relatable easy to deal with CSV files but a lot of times I find myself in trouble working through different functions on my site. I still use CSV files to collect data and place them in order and categorize them as well. That way I'm never lost on any work that I'm doing and when I was starting with them, I didn't even know how to open a csv file correctly for every different function that I wanted to do. For me opening them as a .txt file allows me to copy data easier.