Epson Apex 20020 - Manual (Page 91)

To change from PERSONAL back to WORDPROC, you can
use the special symbol . . (two periods). The . . symbol
always designates the parent directory. In other words, you can
type:
CD . .
Using Pathnames
A pathname tells MS-DOS how to find its way to the directory
you want to access. There are two basic types of pathnames:
relative and absolute. A relative pathname tells MS-DOS how
to find its way to the desired directory from the current default
directory. An absolute pathname tells MS-DOS how to find its
way to the desired directory from the root directory.
Here is an example of an absolute pathname:
\WORDPROC\PERSONAL
The backslash at the beginning of this pathname tells
MS-DOS to start at the root directory, proceed down the
directory tree to WORDPROC, then continue down the tree
to PERSONAL.
Here is an example of a relative pathname:
SALES
Because this pathname does not begin with a backslash,
MS-DOS assumes that the starting point of the path is the
current, default directory. This pathname thus tells MS-DOS
to find a directory named SALES that is a subdirectory in the
current default directory. Using the example above, you would
have to be logged onto the SPDSHEET directory for this
pathname to be valid.
Relative pathnames can tell MS-DOS to move upward in the
directory tree as well as downward. The symbol . . in a
pathname tells MS-DOS to move upward one level in the tree.
Using MS-DOS With Your Computer 4-19