what the heck are these grid tags in the generated code? I was thinking I was about to applaud a flex-box wizard that masterfully did ordering and more, but in

what the heck are these grid tags in the generated code? I was thinking I was about to applaud a flex-box wizard that masterfully did ordering and more, but instead I see tags that I'm seriously not sure about. Are they compatible with the rest of my flex-box related site with Bootstrap all over the place? Are they compatible with my child elements and positioning? Too many questions for this day and age. I don't think enough people are familiar with those particular tags that get generated, but if thats the "new way" lets revisit this in 2021