standard.scaling 
    Audio     Button     Canvas     Controller     DropDown     Html     Image     MediaRecorder     Scale     Text     TextInput     Tooltip     Video         Youtube   
 description
Scales elements using a zoom index/to a given size/container.
syntax
getX(ELEMENT_NAME).scaling() example(s)
@newTrial(
@    newCanvas("container", 640, 360)
@      .color("pink")
@      .add( 20, "middle at 50%", newButton("Hello"))
@      .add("right at 620px", "middle at 50%", newButton("world"))
$      .scaling("page")
@      .print("center at 50vw","middle at 50vh")
@    ,
@    getButton("Hello").wait()
@)
- In the example above, command will make sure the Canvas element and the elements it containsare stretched (preserving the ratio) so that it occupies the maximum area possible on the page.