I had a requirement to produce documentation for a graduate class in Advanced Data Structures. The professor let us choose the language WA wanted to use, within reason. I choose C# and documented all the classes, methods, etc. using C#'s triple slash (///) syntax. I then used DocFX to produce the first pass at the doc web site. Spent some time understanding how to add additional content and spruce up the final product. Did all three projects with this technique. Was very satisfied with the result. Got a great grade, maybe because my programs were good, but I like to think the quality of the documentation site helped.