# File lib/asciidoctor/table.rb, line 146
  def initialize(table, index, attributes = {})
    super(table, :column)
    attributes['colnumber'] = index + 1
    attributes['width'] ||= 1
    attributes['halign'] ||= 'left'
    attributes['valign'] ||= 'top'
    update_attributes(attributes)
  end