Help about AS .choose

Hi,
i don’t know much about action script.
what is mean of this

_root.choose = “contacts”;

and
gotoAndPlay (_root.choose);

view page
http://www.flashvault.net/tutorial.asp?ID=139

that would mean

tell variable “choose” to contain “contacts”

tell timeline to goto “choose” which is “contacts”

it gotoandplay “contacts”

it allows you to use the same code but tell it different things

ie if you tell “choose” to be “admin”

then the code will goto page “admin”