class RDoc::Markup::ToMarkdown

def initialize markup = nil
  super
  @headings[1] = ['# ',      '']
  @headings[2] = ['## ',     '']
  @headings[3] = ['### ',    '']
  @headings[4] = ['#### ',   '']
  @headings[5] = ['##### ',  '']
  @headings[6] = ['###### ', '']
  add_regexp_handling_RDOCLINK
  add_regexp_handling_TIDYLINK
  @hard_break = "  \n"
end