gistfile1.txt

draw
  chip
    fill
    border
    icon
      image?
  inputs
    input
  outputs
    output
    
events
  chip
    draggable
  output[i]
    onDragStart
      user.states.connecting.output = { active: true, node: this }
  input[i]
    onDragEnd
      user.states.connecting.output.node.connections.push = this
      user.states.connecting.output = { active: false, node: undefined }