FrontPageLinux.com Article: https://frontpagelinux.com/tutorials/17-kde-plasma-features-that-you-didnt-know-about/
One of the things I really like about Present Windows, is that you can start typing and Plasma will narrow down the displayed windows to just those whose title matches what you're typing. Fairly quick way of navigating a bunch of different windows for a bunch of apps on a bunch of desktops!
Also, you can set up Plasma to change window transparency by scrolling on the title bar - not sure if that's on by default.
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