Explain which key is META on common platforms

[cvrebert]

Since almost nobody has an actual old-school Meta (◆) key on their keyboard these days, let's save everyone the cross-referencing trip and explain what metaKey refers to in practice in the modern day.

Sources:

• https://w3c.github.io/uievents/#widl-KeyboardEvent-metaKey
• https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/metaKey

[cvrebert]

As per usual, the CLA bot is wrong.

[agcolom]

@cvrebert Thanks for the PR. I can confirm that you have signed the CLA with matching name and email.

[scottgonzalez]

I updated your first CLA signature to use the name that you have in your git config.

[arthurvr]

A few lines above this we wrapped META in <kbd> tags. I guess we should do that here too.

[cvrebert]

@arthurvr Done.