summary.txt: summary of results
      log.txt: log of progress
      dir.txt: found   1 directory with files
    file.html: found   1 file
   fileX.html: found   1 file (cross referenced)
   fileF.html: found   1 file with forward links
  orphan.html: -----   2 orphans
    warn.html: warn    1 warning
   warnX.html: warn    1 warning (cross referenced)
   warnF.html: warn    1 file with warnings
   error.html: ERROR   1 missing file
  errorX.html: ERROR   1 missing file (cross referenced)
  errorF.html: ERROR   1 file had broken links