The Vector Math node has an operation called Normalize. I have always presumed that this is a monadic operator which ignores the second input and returns a unit vector in the direction of the input vector. This is also what poor said in this answer.
However, I was recently reading the manual and noticed that it says:
Normalizing input 1 and 2.
Which is super-duper unhelpful. I have never known of a binary "normalize" operation (and couldn't find one in a quick Google search), so I don't know what "Normalizing input 1 and 2" means.
So what is going on here? Does it use the second input, if so how? Or is the manual just plain wrong?