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This tip just popped up in my phpStorm IDE (OS X):

The ⎋ key in any tool window moves the focus to the editor. ⇧⎋ moves the focus to the editor and also hides the current (or last active) tool window. The F12 key moves the focus from the editor to the last focused tool window.

I've never seen that key symbol before and Google returned nothing.

Anybody know the meaning of this mysterious key?

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migrated from May 8 '12 at 8:40

This question came from our site for professional and enthusiast programmers.

up vote 13 down vote accepted

is another symbol for the Esc key. Like on other keyboards, on a Mac keyboard it's the key left of F1.

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That's Apple for you: breaking tradition to get a more culturally neutral iconography (i.e it means "escape" without be spelled as abbreviated English). Again. – dmckee May 7 '12 at 20:06
Hilarious, thanks for the learnin'! – Scott Heath May 7 '12 at 20:33
It's not just comparable to Escape, it is Escape. ⎋ is merely the symbol for Escape the same way ⇧ is the symbol for Shift. – Coxy May 8 '12 at 0:19

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