my $BunchNotebook = $BunchInfoFrame->DynaTabFrame
       (
        -font => $GeneralInformationFont,
        -tabcolor => 'gray',
        -raisecolor => 'lightgray',
        -tabside => 'nw',
        -tabpadx => 3,
        -tabpady => 3,
        -tiptime => 600,
        #-height => 500, #does not work
        -tipcolor => 'white'
        )->pack (-side => 'top', -expand => 1, -fill => 'both');

#then add the tabs:
$BunchTabs{$Title} = $BunchNotebook -> add (-caption => $Title);