digitalWrite(array,1) bug?

Unless I'm missing something, this is all documented in the digitalWrite reference?

digitalWrite([LED1,LED2], 0) // both off
digitalWrite([LED1,LED2], 1) // LED2
digitalWrite([LED1,LED2], 2) // LED1
digitalWrite([LED1,LED2], 3) // LED1 + LED2

Basically if you put an array in then you can write the pins directly with a binary number - it's hugely useful for things like LED displays, where you might want to write values to several pins at once.