How about a one line comment that summarizes what the block of code directly below does, in order to avoid the need to run an interpreter in your head while ski

How about a one line comment that summarizes what the block of code directly below does, in order to avoid the need to run an interpreter in your head while skimming code to find what you are interested in. That little bit of extra information, which only takes a few seconds to type, can save a lot of people a lot of time afterwards. I do this, and add any addition "why" or other needed detail indented under the first summary commented line.