sub page_setup
{
  my ($self, $options) = @_;

  $options = {} unless ref $options eq 'HASH';

  # PPT.PageSetup.SlideSize = ppSlideSizeA4Paper
  # Const ppSlideSizeA4Paper = 3

  # Microsoft constants
  #
  #  Name Value Description
  #  ppSlideSize35MM  4 35MM
  #  ppSlideSizeA3Paper 9 A3 Paper
  #  ppSlideSizeA4Paper 3 A4 Paper
  #  ppSlideSizeB4ISOPaper  10  B4 ISO Paper
  #  ppSlideSizeB4JISPaper  12  B4 JIS Paper
  #  ppSlideSizeB5ISOPaper  11  B5 ISO Paper
  #  ppSlideSizeB5JISPaper  13  B5 JIS Paper
  #  ppSlideSizeBanner  6 Banner
  #  ppSlideSizeCustom  7 Custom
  #  ppSlideSizeHagakiCard  14  Hagaki Card
  #  ppSlideSizeLedgerPaper 8 Ledger Paper
  #  ppSlideSizeLetterPaper 2 Letter Paper
  #  ppSlideSizeOnScreen  1 On Screen
  #  ppSlideSizeOverhead  5 Overhead

  if ( defined $options->{SlideSize} )
  {
    $self->presentation->PageSetup->{SlideSize} = $options->{SlideSize};

    print "PowerPoint.pm():  set SlideSize=2\n";
  }

  if ( defined $options->{SlideWidth} )
  {
    $self->presentation->PageSetup->{SlideWidth} = $options->{SlideWidth};

    print "PowerPoint.pm():  set SlideWidth=" . $options->{SlideWidth} . "\n";
  }

  if ( defined $options->{SlideHeight} )
  {
    $self->presentation->PageSetup->{SlideHeight} = $options->{SlideHeight};

    print "PowerPoint.pm():  set SlideHeight=" . $options->{SlideHeight} . "\n";
  }

}