what is it?

What is this?

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Here. Let me try and blow it up a bit for you...

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Well, that didn't work so good.
Anyways, it's the "shift then the button just to the left of the 1 key on the keyboard".
My work-buddy called it "Squiggles". Someone else in the office said it was a "tilda" or "tildee" or something like that. I tried google, but got no results.
It came up yesterday at work. Apparently, it's some sort of wildcard symbol. But, I'll be damned if I can find out what the heck that thing is called!! Oh, well. Whatever that little thing is, it solved a big issue at work yesterday, so I'm liking it!