A. A. When you are in a cmd.exe session, it is possible to change the prompt to display other information, such as time, date, OS version etc. To change the prompt just use

prompt <text>
e.g. prompt johns prompt

While basic text will work it is not very helpful, and below is a list of all the codes you can use

$A & Ampersand
$B | Pipe
$C ( Open parenthesis
$D Current date
$E Escape code (ASCII code 27)
$F ) Close parenthesis
$G > greater-than sign
$H Backspace (erases previous character)
$L < Less-than sig
$N Current drive
$P Current drive with path
$Q = Equal sign
$S Space
$T Current time
$V Windows NT version number
$_ Carriage return and linefeed
$$ $ sign

If you have command extensions, you can also use

$+ Zero or more + characters depending on the depth of the PUSHD directory stack
$M Displays the remote name associated with the current drive letter