;Waits for a key and then exits

Graphics 640,480

Text 0,0, "This program is worthless."
Text 0,12, "Press escape to exit."

Flip

;Wait until user presses 1 to Escap
While Not KeyDown(1)
Wend
End

In the program above, where is the Escape key defined, is it "1" in the Basic programming language? Thanks.

I'M reading the book "3D programming for Teens, 2 Edition"