When you are working on a .m file which you do not necessarily like to have added to your MatLab's path, it is a nuisance to have to browse to the current directory every time you re-open MatLab. Granted you can easily do this by just running the m file, but sometimes you just want to browse to the directory, not to run the script. Well, scl can do this for you. Just setup scl once (as described in the comment inside), and run the command 'scl' in your command line while a desired script is open and active in editor already.