Oh, yes, you found another place where I had to make an arbitrary placement. Air pressure tools just did not fit anywhere else, so I slapped them there in trans

Oh, yes, you found another place where I had to make an arbitrary placement. Air pressure tools just did not fit anywhere else, so I slapped them there in transition metals, which is unforgivable. See my longer comment for more whining about how it's not nearly as arbitrary as you make it out to be.