One other point in the bullets- shouldn't the underscores be dashes/hyphens?

Also- how does one code bindings for modifier keys, like the option key?

I want to do different amounts of processing, depending whether the Option key is held down during Command w keystroke.

I'm working in MacOS.

I've tried root.bind_all('<Alt-w>',func) and root.bind_all('<Alt-Command-w>',func) Neither works.

I'd check the event.state attribute with an appropriate modifier key mask in the callback func but the execution never gets there.( breakpoint not hit)