In the previous section, we learned how to use a CSS preprocessor and how to compile this SASS/LESS code into pure CSS to be interpreted by the browser. Note that each time you make a change, you will need to recompile the entire file, which means that you will need to type the same command and do the same task one, two, and several times. Yes, it's really boring. Fortunately, we have task automation tools. What does that mean? Some other tool will do the dirty job for us.