# File lib/facets/more/xmlhelper.rb, line 79
  def instruct( tag, *args )
    atts = Hash === args.last ? args.pop : {}
    atts = atts.collect{ |k,v| %{ #{k}="#{v}"} }.join('')
    body = ' ' + args.join(' ')
    "<?#{tag}#{body}#{atts}?>"
  end