Epson LT-286, Руководство пользователя

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You can type the name and the extension in either lowercase or
uppercase letters, but do not use uppercase or lowercase letters to
distinguish between files. After you type the filename, MS-DOS
converts all lowercase letters to capitals.
Using Directories
MS-DOS organizes files by storing them in directories. This makes it
easy for you to find and manage your files. Directories also list
specific information about each file, including the filename, the size
of the file, and the date and time you last modified the file.
When you formatted your hard disk, MS-DOS created a single
directory for the disk. This directory is called the root directory.
Because the hard disk has room for hundreds of files, MS-DOS
allows you to create additional directories, called
subdirectories.
Subdirectories allow you to organize your hard disk so that files of
similar type or purpose are kept together. Without subdirectories, it
would be difficult to keep track of all the files on your hard disk.
You can create subdirectories on your diskettes as well as on your
hard disk. But you may not need to create them on diskettes,
because diskettes hold fewer files.
The subdirectory structure of a hard disk can be represented with a
tree-like diagram, like this:
Root Directory ( \ )
LEDGER
WORDPROC
ACCOUNTS SALES
BUSINESS PERSONAL
I
STORIES
LETTERS
5-6 Using MS-DOS With Your Equity LT-286