Sometimes your tools lie to you.
Putting together things you already have.
Minding your character set.
Switching between things, but different things.
The system doesn't try to figure it out any more, because it was always a guess, and often a really bad one.
Putting together some building blocks.
Because the driver said it was removable.
It stands for Windows Overlay Filter, but that name doesn't really tell you much.
It's alphabetical order, but not in the obvious way.
It's still there, but you have to dig a little deeper for it.