On the topic of horizontal scrolling would it be possible to make the clickable target on a tab (or maybe it's got something to do with the cursor) larger than it currently is?  I find it difficult to locate the target with the horizontal scrolling cursor and I'm often clicking several times on a tab to get it to open where with the normal cursor this is never a problem.

Chris, that's what I meant by troublesome. So I'm not the only one it bothers...

David, yes they would communicate. I understand your confusion. Let's say they would be "cropped views" for now.

It's more about book keeping inside a single document. For example: first tab would be UI, second would be formatting, others would be different modules of my script. I have to push stuff around all the time and even with groups or alt-drag it takes a while.

In Excel a sheet is a very large 2d array, but you can add a third dimension by adding sheets and access them with =Sheet2!A1 (3 coordinates : Sheet2 , A , 1)

So sheet are just 2d slices in a 3d array for visualization.

Processing is not such a good example, it's just pages in your code that are executed one after another, but still it's good for clarity : one tab with "setup", one with "draw", one with functions, one with classes etc

Since you're an architect, think of my tabs as the storeys of a building. there are horizontal as well as vertical wires.

I figured you could add a "vertical wire" that could eventually act as a cluster in/outputs for export etc

Just an idea anyway

nice!