video1.0<iframe src="https://www.loom.com/embed/79cbe592ce374632b497d4d50e732cdb" frameborder="0" width="1398" height="1048" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>10481398Loomhttps://www.loom.com10481398https://cdn.loom.com/sessions/thumbnails/79cbe592ce374632b497d4d50e732cdb-8638383ef56c0480.gif318.333This Loom explains how to use comments in R to document code and prevent code from running. It notes that R ignores any text following a hash symbol before a line, including double hashtags and many hashtags for visual sections, and that you can also start a comment mid line so R will skip the commented part. The speaker emphasizes that comments should focus more on the why than the what, using an average age example of adding 29, 42, and 68 then dividing by 3. Finally, it shows how commenting out a line can avoid stopping a Run All command when there is an error, and that spaces can be included in expressions like 4 divided by 5 as comments.