Below, "View1" and "View2" are both TopComponents positioned in
the "explorer" mode. Hence, tabs are created, as always. However,
in the 7.1 build I used to create the screenshot below, new group
behavior is available to these two TopComponents, simply because
they are positioned in the same mode:
Now, any TopComponents found in the same mode can behave
together, e.g., can be undocked together, moved together, minimized
together, etc, which is what several NetBeans Platform...