Open 2 Cards in same stack side by side

[RM]

https://www.questia.com/magazine/1G1-8948114/hypercard-2-0-a-closer-look

"HyperCard 2.0, however, will not allow you to have two or more windows 
open that show cards from the same stack. The members of die HyperCard 
Development Team had planned such a feature, but dropped it from the 
final release since it presented a number of thorny human interface 
problems."

On 20.03.2016 18:01, Richard Gaskin wrote:
> Richmond wrote:
>> "In HyperCard 2.x, you can have only one stack open but many card
>> windows open"
>>
>> http://www-psych.stanford.edu/~pinto/hc2.html
>>
>> Mind you, I cannot for the life of me remember how to code that.
>
> Calhoun's description there hints at how we could do this in LC:
>
>     In HyperCard 2.x, you can have only one stack
>     open but many card windows open -- the stacks
>     in inactive windows are actually closed, i.e.
>     the files on disk are closed.  As I've
>     explained elsewhere, an inactive card window is
>     nothing more than a big button whose "script"
>     tells HC to "go to the card whose image is in
>     this window".  When you click on such a window,
>     HyperCard activates it, closes the current stack,
>     and opens the stack in the newly active window.
>
> You could write this in LC easily enough using:
>
>   import snapshop from <cardLongID>
>
> The older snapshot syntax requiring a rect can only grab from the 
> current screen buffer, but the newer "from <object>" option causes a 
> fresh rendering of the specified object directly into the new image's 
> buffer - and those objects to not need to be open, or even in memory 
> yet, at the time that command it called.  If it's a valid object 
> reference, it'll work for any object that has a visual appearance 
> (meaning cards and controls, but not stacks since a stack is an 
> abstraction whose visible element is a card).
>
> Try it:
>
> answer file "Select a stack file:"
> import snapshot from the long id of cd 1 of it
>