It was quite interesting to read why we document things we write. I knew about the reasons Protection and Acknowledgment, but I never thought about Commentary, Tracing, or Validation. I always cited sources because I had to and to not get into trouble when it came to plagiarism, but now it makes sense that it also helps out readers in understanding a document more. Documentation adds credibility and further reading for those interested. With commentary the documentation can also add the author’s voice to the piece, without taking away from the main part of the document itself.