Children, that is the picture of “XML”. Document Markup Language. It was used by the end of the XX-th century.
This was a post from May 2015. Unfortunately, it is still actual in May 2021.
This probably applies to you. Especially if you are a Developer. Or if you suspect you might be a .NET Lemming? (A member of any large group following an unthinking course towards mass destruction)
.NET and SharePoint in particular are two likely offenders here. It is now 2021 (May) … Oops?
This subject (XML in software development) has been reiterated to death. And back.