Viewing a new window with offset

I want to make a little presentation program that will have a main window and a button, and the button will display other windows by loading them from text files. I can make that work, BUT, I want the windows called by the main window to be offset a bit and not on top of the main window. I have read the documentation for "layout" but I am not able to find a place for the "offset" refinement that makes it work. I wonder if anyone can explain. My latest and most-promising-looking attempt is shown below:

Thank you.

REBOL [
Title: "A little presentation program"
]

; This test window will eventually be in a text file.
TEST-WINDOW: {
VH1 "Test heading"
text "Test text"
}

; A button will load a window from a text file and show it with offset.
TEST-BUTTON: does [
view/new layout/offset load TEST-WINDOW 10x50
]

; This is the main window that will display the windows stored in text files.
MAIN-WINDOW: [
button "Test" [TEST-BUTTON]
]

; Start program.
view layout MAIN-WINDOW

Offst is a view refinement, and it is relative to the screen, not to the last window:

Code:

view layout [ 
 button "Click me" [
  view/new/offset layout [text "example"] 100x100 
  ]
]

Try to change 100x100 with other values, if you use negative values, window will be out of the screen, but it will be there...