Why use a CR/LF at end of line?
CR/LF can lead to double-spacing, notably on Mac and Unix, but at least there is a CR in there for Mac users, and there is an LF for *nix users. If you don’t know or care what this is about, please skip blithely on. There are three differing standards for how to represent the end of a line of text. In brief, Apple Macs use the CR character. Unix and its variants use the LF character. Microsoft systems, from MS-DOS through Windows, use both together. If you want the history behind these: CR stands for Carriage Return, and comes from the old typewriter / teletype idea of a command to move the print head from the right of the page back to the left when it reaches the end; LF stands for Line Feed, and comes from the old typewriter / teletype idea of a command to move the print head down a line; CR/LF together indicate moving down a line and back to the left of the page. The history is not relevant to today’s computers in principle, but in practice they all use one of these legacy conventio
