It's actually similar to a filing cabinet where you know that some things are in the top drawer, some things in the bottom drawer. Within those drawers you know which things are in various file folders by their labels. In the ella system, files are just like the file folders in the drawers.
Directories are more like the drawer that holds the files.
Right now lets find out what's in the 'dead.letter' file and then how to get into the private directory. If the text of the file is too long to fit on the screen, the ' more ' command will display the first 22 lines of text in the file and wait. At this point, you can either press the space bar to have the next 22 lines displayed, or press ' ' to have just one more line displayed. Now that you know how to see what's in a file, lets return to directories. Your login name uniquely identifies you to the ella system as well as identifying a unique branch in the system file and directory organization where your files will normally be saved.