Epson Apex 20020 - Manual (Page 88)

3. Type the name of the device, such as PRN, and press
Enter. MS-DOS prints the file on your printer.
See your MS-DOS Reference Manual for more information on
the PRINT command.
Using Directories
You can create many files on a diskette, and a hard disk can
store thousands of files. To help you organize this much
information, MS-DOS lets you subdivide a disk into logical
units called directories. Directories allow you to arrange the
data on your disk so that files of similar type or purpose are kept
together.
While you may not need to create directories on a diskette—
especially if it contains only a few large files-directories are
essential for organizing files on a hard disk.
Whenever you format a disk, MS-DOS creates one main
directory for you. This directory is called the root directory.
Any subsequent directories you create are logically subordinate
to the root directory; that is, they are subdirectories of the root
directory. A simple directory structure might look like this:
This arrangement would enable you to keep your word
processing programs and data files in a directory called
WORDPROC, your spreadsheet program and data files in
a
directory called SPDSHEET, and the MS-DOS files in a
directory called DOS. The few files that MS-DOS needs to find
as soon as you boot your system (COMMAND.COM,
CONFIG.SYS, and perhaps AUTOEXEC.BAT) could remain
at the top level of the structure, in the root directory.