how PS1 variable is used ?

[MR ZenWiz]

On Tue, Dec 7, 2010 at 12:01 PM, Denis Firsov <dfirsov.source at gmail.com> wrote:
> When i run "set" command i see bunch of variables.
> Among them i found "PS1" variable:
> PS1='\[\e]0;\u@\h: \w\a\]${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
>
> how this variable is used ?
>
It is used exactly in accordance with the specifications in the shell
man page, which is the first place one should look for such
information.

(IOW, RTFM)