# File app/helpers/attendance_adm_helper.rb, line 16
  def tslot_head
    ret = '<tr class="listing-head">'
    [_('Conference'), _('Room'), _('Start time'), _('Time distance'),
      _('Tolerance (pre)'),_('Tolerance (post)'), ''].each do |col|
      ret << "<th>#{col}</th>"
    end
    ret << '</tr>'

    ret
  end