C:\WINDOWS>HELP SUBST
Associates a path with a drive letter.

SUBST [drive1: [drive2:]path]
SUBST drive1: /D

 drive1:        Specifies a virtual drive to which you want to assign a path.
 [drive2:]path  Specifies a physical drive and path you want to assign to
                a virtual drive.
 /D             Deletes a substituted (virtual) drive.

Type SUBST with no parameters to display a list of current virtual drives.



C:\WINDOWS>HELP TIME
Displays or sets the system time.

TIME [/T | time]

Type TIME with no parameters to display the current time setting and a prompt
for a new one.  Press ENTER to keep the same time.

If Command Extensions are enabled the TIME command supports
the /T switch which tells the command to just output the
current time, without prompting for a new time.



C:\WINDOWS>HELP TITLE
Sets the window title for the command prompt window.

TITLE [string]

 string       Specifies the title for the command prompt window.