Insert key on a Macbook in OS X

I'd like to be able to use/find the Insert key on my MacBook, which doesn't have an extended keyboard.  Apparently the Help key works as Insert on extended keyboards, but doesn't exist on the smaller MacBook keyboards.  I've also seen two possible answers for the smaller keyboard, but neither seems to work in PhpStorm (not sure if they work elsewhere).  Those two are as follows:

On a MacBook Pro (and maybe the Macbook?):
Hold the Ctrl and fn keys down (the two bottom left keys) and type the letter m

On the newer iMac keyboard (the ultra skinny aluminum thing):
Hold the Control key and the fn keys down (the fn is next to the Home key) and hit the Return key.

Anyone gotten Insert to work from a MacBook or smaller Mac keyboard?

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