XML comments are part of the DOM and are retained, usually. And Visual Studio has become quite good at not clobbering things it does not modify itself. The proj

XML comments are part of the DOM and are retained, usually. And Visual Studio has become quite good at not clobbering things it does not modify itself. The project files are still normal MSBuild projects, so editing them by hand to add targets of other customisations isn't exactly uncommon.