class Kramdown::Converter::Pdf

the specific options for the element with which the given options are updated.
Each time a child is rendered, the +TYPE_options+ method is invoked (if it exists) to get

Render the children of this element with the given options and return the results as array.

def inner(el, opts)
  @stack.push([el, opts])
  result = el.children.map do |inner_el|
    options = opts.dup
    options.update(send(DISPATCHER_OPTIONS[inner_el.type], inner_el, options))
    convert(inner_el, options)
  end.flatten.compact
  @stack.pop
  result
end