docs: function lookupCount(state, bindings, key) {
    if(key in bindings) {
      var arr = bindings[key], r = 0
      for(var i=0, n=arr.length; i<n; ++i) {
        r += state[virtualKeyCode(arr[i])]
      }
      return r
    }
    var kc = virtualKeyCode(key)
    if(kc >= 0) {
      return state[kc]
    }
    return 0
  }