Document doc = new Document();
Paragraph paragraph = doc.addSection().addParagraph();
Chart chart = paragraph.appendChart(ChartType.Column, 450, 300).getChart();
chart.changeSeriesType("Series 3", ChartSeriesType.Line, true);
System.out.println(chart.getSeries().get(2).getChartType());
doc.saveToFile("ComboChart.docx"); 

//Markdown to Excel
Workbook workbook=new Workbook();
workbook.loadFromMarkdown(inputFile);
workbook.saveToFile("out.xlsx", FileFormat.Version2013);

//Excel to Markdown
Workbook workbook=new Workbook();
workbook.loadFromFile("in.xlsx");
workbook.saveToFile("out.md", FileFormat.Markdown);
workbook.dispose();

Workbook workbook = new Workbook();
Worksheet sheet = workbook.getWorksheets().get(0);
XlsTextBoxShape textbox = (XlsTextBoxShape) sheet.getTextBoxes().addTextBox(4, 2, 100, 300);
textbox.setText("مبرمج , اختبار .");
textbox.setHAlignment(CommentHAlignType.Left);
textbox.setInnerLeftMargin(1);
textbox.setInnerRightMargin(3);
textbox.setInnerTopMargin(1);
textbox.setInnerBottomMargin(1);
textbox.setTextDirection(TextDirectionType.RightToLeft);
String result = "setInternalMarginOfTextbox_result.xlsx";

Workbook workbook = new Workbook();
workbook.loadFromFile("input.xlsx");
Worksheet sheet = workbook.getWorksheets().get(0);
HTMLOptions options = new HTMLOptions();
options.setImageEmbedded(true);
//Setting "HTMLOptions.StyleDefineType.Inline" 

options.setStyleDefine(HTMLOptions.StyleDefineType.Inline);
sheet.saveToHtml("out.html",options);