The demo
Take one apart
One setting out of the set, running live. Change it and the dock answers immediately.
Several windows
One thing an entry can tell you, and a few of the ways it can tell you. There is a great deal more of both.
Several windows
What the demo shows. This is the situation the bar is reading.
Windows open
Formbar settings. Apply writes these.
Multiple windows
Overflow
The number, on the icon
Count. A badge on the icon names how many.
The exact number, at a glance. It costs a corner, and it counts the windows the app holds.
Multiple windows: Count badge
Apply these settings