Oh "Know"? What Is The Little "Hero" Icon In Lower Left Side of Screen?

Just notice a little "Hero" icon that has just appeared this afternoon about 1.4 up on the LH screen margin. If you click on it it brings up the Hero screen--just like 'H' does. But I swear it hasn't always been there.

Does some other something I am unfamiliar with govern it being there now and not at other times?

Thanks.

you can drag and drop items from the menu onto the screen. Perhaps you did that by accident. I think you drag them back to the menu to get rid of them.

Ya, if you click, drag and release any menu option, it becomes a button that can be moved around. To get rid of it, drag and drop it back on the menu bar.

Yup! That's certainly the answer. Thanks.