Folding is the process of compressing multiple lines of content into a single line. Once folded, the content can then be expanded by executing a specific key binding. This type of feature is typically prevalent in programming environments, but it can be useful for any type of content you happen to be working with. The decision to utilize folding comes down to whether you consider a particular threshold of complexity for your content to have been reached.
You don’t have to look too far before you encounter a real-world example of folding. If you took my advice from Chapter 2, you are already using my configuration files from ...