HtmlExportOptions options = doc.HtmlExportOptions;
options.OfficeMathOutputMode = HtmlOfficeMathOutputMode.MathML;

doc.RemoveBlankPages(); // Delete blank pages
doc.RemovePages(new List {0,1,3}); // Delete specified pages

Document doc = new Document();
doc.AddSection().AddParagraph().AppendText("wertyuiop[]fghjk");

// Add VBA project to document
VbaProject vbaProject = new VbaProject();
vbaProject.Name = "SampleVBAMacro";
doc.VbaProject = vbaProject;

// Add modules to VBA project
// Module 1
VbaModule vbaModule1 = doc.VbaProject.Modules.Add("SampleModule1", VbaModuleType.StdModule);
vbaModule1.SourceCode = @"
Sub DocumnetInfo()
    MsgBox ""create time: "" &Now()
    MsgBox ""Pages:"" & ActiveDocument.Range.ComputeStatistics(wdStatisticPages)
End Sub

Sub WriteHello()
    Selection.TypeText Text:=""Hello World!""
End Sub";

// Module 2
VbaModule vbaModule2 = doc.VbaProject.Modules.Add("SampleModule2", VbaModuleType.StdModule);
vbaModule2.SourceCode = @"
Sub InsertCurrentDate()
    Selection.TypeText Text:=Format(Now(),""yyyy-mm-dd hh:mm:ss"")
End Sub

Sub IndentParagraph()
    Selection.ParagraphFormat.LeftIndent = InchesToPoints(0.5)
End Sub";

doc.SaveToFile("result.docm", FileFormat.Docm);
doc.Close();

Document doc = new Document();
doc.LoadFromFile("input.docx");
StringBuilder sb = new StringBuilder();
RevisionInfoCollection revisionInfoCollection = doc.GetRevisionInfos();

foreach (RevisionInfo revisionInfo in revisionInfoCollection)
{
    sb.AppendLine("[author]:" + revisionInfo.Author + "\r\n" + "  [RevisionType]:" + revisionInfo.RevisionType + "\r\n" + "  [DateTime]:" + revisionInfo.DateTime.ToString() + "\r\n" + "  [OwnerObject]:" + revisionInfo.OwnerObject + "\r\n" + "  [OwnerObject.Owner]:" + revisionInfo.OwnerObject.Owner + "\r\n");
    if (revisionInfo.OwnerObject is TextRange textRange)
    {
        TextRange range = (TextRange)textRange;
        sb.AppendLine($"TextRange - Content:{range.Text}");
    }
}
File.WriteAllText(outputFile, sb.ToString());
doc.Dispose();

// Use BYROW to calculate the average of each row
sheet.Range["G2"].Formula = "=BYROW(B2:F2, LAMBDA(row, AVERAGE(row)))";
// Use BYCOL to calculate the average of each column
sheet.Range["B8"].Formula = "=BYCOL(B2:B7, LAMBDA(col, AVERAGE(col)))";

Workbook workbook = new Workbook();
workbook.LoadFromFile(inputFile);
Worksheet sheet = workbook.Worksheets[0];
CellRange cell = sheet.Range["A1:B3"];
string html = cell.HtmlString;
File.WriteAllText(outputFile, html);

CopyRangeOptions options = CopyRangeOptions.Transpose | CopyRangeOptions.All;
sheet["A1:C4"].Copy(sheet["D2:G3"], options);
sheet["A1:B5"].Copy(sheet["D5"], options);
workbook.SaveToFile(outputFile);

Workbook workbook = new Workbook();
workbook.LoadFromFile(inputFile);
workbook.ConverterSetting.PdfConformanceLevel = Spire.Xls.Pdf.PdfConformanceLevel.Pdf_UA1;
workbook.SaveToFile(outputFile, FileFormat.PDF);
workbook.Dispose();

// Simple word matching
Regex regex = new Regex(@"\bhello\b");
IAutoShape shape = (IAutoShape)ppt.Slides[0].Shapes[0];
TextHighLightingOptions options = new TextHighLightingOptions();
shape.TextFrame.HighLightRegex(regex, Color.Red, options);

// Retrieve
PdfFileInfo info = doc.FileInfo;
PdfVersion version = info.Version;

// Settings
doc.FileInfo.Version = PdfVersion.Version2_0;

ListStyle listStyle = document.getStyles().add(ListType.Numbered, "levelstyle");
listStyle.isCustomStyle(true);
ListLevelCollection levels = listStyle.getListRef().getLevels();
levels.get(0).setPatternType(ListPatternType.Arabic);
levels.get(0).setStartAt(1);
levels.get(0).getCharacterFormat().setFontName("Trebuchet MS");

paragraph.getListFormat().applyStyle(ListStyle listStyle);
paragraph.getListFormat().setListLevelNumber(int leverNumber)

or

paragraph.getListFormat().applyListRef(ListDefinitionReference list, int leverNumber);

Document document = new Document();
Section sec = document.addSection();
Paragraph paragraph = sec.addParagraph();

// Create default bullet list template
ListTemplate template = ListTemplate.Bullet_Default;
ListDefinitionReference listRef = document.getListReferences().add(template);

// Create default numbered list template
ListTemplate template1 = ListTemplate.Number_Default;
listRef = document.getListReferences().add(template1);
listRef.getLevels().get(2).setStartAt(4);// Set the third level to start at number 4

// Add paragraph and apply numbered list style (level 2)
paragraph = sec.addParagraph();
paragraph.appendText("List Item 1");
// Apply level 2 (index starts at 0; 1 means the second level)
paragraph.getListFormat().applyListRef(listRef, 1);

paragraph = sec.addParagraph();
paragraph.appendText("List Item 2");
// Apply level 3
paragraph.getListFormat().applyListRef(listRef, 2);

paragraph = sec.addParagraph();
paragraph.appendText("List Item 3");
// Apply level 2
paragraph.getListFormat().applyListRef(listRef, 1);

paragraph = sec.addParagraph();
paragraph.appendText("List Item 4");
// Apply level 3
paragraph.getListFormat().applyListRef(listRef, 2);

document.saveToFile(outputFile, FileFormat.Docx);
document.close();

Document document = new Document();
Section sec = document.addSection();
Paragraph paragraph = sec.addParagraph();
// Create Arabic numeral numbered list template (e.g., "1.", "2.", ...)
ListTemplate template = ListTemplate.Number_Arabic_Dot;
// Use addSingleLevelList to create a single-level list reference
ListDefinitionReference listRef = document.getListReferences().addSingleLevelList(template);
int levelcount = listRef.getLevels().getCount();//Check level count
boolean res=listRef.isMultiLevel();
// Add first list item
paragraph = sec.addParagraph();
paragraph.appendText("List Item 1");
paragraph.getListFormat().applyListRef(listRef, 0);
paragraph = sec.addParagraph();
paragraph.appendText("List Item 2");
paragraph.getListFormat().applyListRef(listRef, 0);

document.saveToFile(outputFile, FileFormat.Docx);
document.close();

Document document = new Document();
Section sec = document.addSection();
Paragraph paragraph = sec.addParagraph();
// Create custom bulleted list style
ListStyle listStyle = document.getStyles().add(ListType.Bulleted, "bulletList");
// Get level configurations of this list style
ListLevelCollection Levels = listStyle.getListRef().getLevels();
// Set picture bullet for level 1
Levels.get(0).createPictureBullet();
Levels.get(0).getPictureBullet().loadImage(imag_Path_1);
// Set picture bullet for level 2
Levels.get(1).createPictureBullet();
Levels.get(1).getPictureBullet().loadImage(imag_Path_2);
// Add first list item
paragraph = sec.addParagraph();
paragraph.appendText("List Item 1");
paragraph.getListFormat().applyStyle(listStyle);
// Add second list item
paragraph = sec.addParagraph();
paragraph.appendText("List Item 1.1");
paragraph.getListFormat().applyStyle(listStyle);
paragraph.getListFormat().setListLevelNumber(1);
// Delete picture bullet for level 1
Levels.get(0).deletePictureBullet();
document.saveToFile(outputFile, FileFormat.Docx);
document.close();

document.getStyles().get("style1").removeSelf();

Document doc = new Document();
Section section = doc.addSection();
TableStyle tableStyle = (TableStyle) doc.getStyles().add(StyleType.Table_Style, "TestTableStyle1");
tableStyle.setHorizontalAlignment(RowAlignment.Center);
tableStyle.getBorders().setColor(Color.BLUE);
tableStyle.getBorders().setBorderType(BorderStyle.Single);
Table table = section.addTable();
table.resetCells(1, 1);
table.getRows().get(0).getCells().get(0).addParagraph().appendText("Aligned to the center of the page");
table.setPreferredWidth(PreferredWidth.fromPoints(300));
table.applyStyle(tableStyle);
// table.getFormat().setStyle(tableStyle);
doc.saveToFile(outputDocxFile, FileFormat.Docx);

doc.copyStylesFromTemplate(inputFile_2);  // Accepts file path as String
doc.copyStylesFromTemplate(doc2);         // Accepts another Document object

// Insert an equation
sheet.getEquations().addEquation(11, 0, 100, 100, "x_{1}^{2}");

// Retrieve an equation
String mathML = sheet.getEquations().get(0).exportMathML();
String latex = sheet.getEquations().get(0).exportLaTeX();

// Update an equation
IXlsEquation equation1 = sheet.getEquations().get(0);
equation1.updateByLaTeXText("\\begin{pmatrix} \r\n  1 & 0 \\\\ \r\n  0 & 1 \r\n \\end{pmatrix} \r\n \\left(x-1\\right)\\left(x+3\\right)");

worksheet.getCellRange("A2").setFormula("=F.INV(0.99, 100, 200)");

worksheet.getCellRange("A2").setFormula("=T.INV.2T(0.05, 10)");

// Create a new PdfDocument object 'pdf1' to work with the first PDF file
        PdfDocument pdf1 = new PdfDocument();

        // Load the first PDF file from the specified path
        pdf1.loadFromFile("ComparePdfDocument_1.pdf");

        // Create a new PdfDocument object 'pdf2' to work with the second PDF file
        PdfDocument pdf2 = new PdfDocument();

        // Load the second PDF file from the specified path
        pdf2.loadFromFile("ComparePdfDocument_2.pdf");

        // Create a PdfComparer object 'compare' with 'pdf1' and 'pdf2' as parameters for comparison
        PdfComparer compare = new PdfComparer(pdf1, pdf2);

        // Set the page ranges to be compared using the options of the comparer
        compare.getOptions().setPageRanges(0, pdf1.getPages().getCount() - 1, 0, pdf2.getPages().getCount() - 1);

        String result = "output.pdf";
        File outFile = new File(result);

        // Create an output stream to write the document to the output file
        OutputStream outputStream = new FileOutputStream(outFile);

        // Compare the PDF documents and save 
        compare.compare(outputStream);

        // Dispose of system resources associated with 'pdf1'
        pdf1.dispose();

        // Dispose of system resources associated with 'pdf2'
        pdf2.dispose();

Presentation ppt = new Presentation();
ppt.loadFromFile(inputFile);
List dataList = ppt.getSlides().get(0).getShapes().get(0).getCustomerDataList();
System.out.println(dataList.size());
for(int i = 0; i < dataList.size(); i++)
{
    String name = dataList.get(i).getName();
    String content = dataList.get(i).getXML();
}

Presentation ppt = new Presentation();
ppt.loadFromFile(inputFile);
Rectangle2D.Double audioRect = new Rectangle2D.Double(220, 240, 80, 80);
IAudio audio=ppt.getSlides().get(0).getShapes().appendAudioMedia(inputFile_1, audioRect);
// Set the duration of the starting fade for 13s
audio.setFadeInDuration(13000f);
// Set the duration of the ending fade for 20s
audio.setFadeOutDuration(20000f);
ppt.saveToFile(outputFile, FileFormat.PPTX_2016);
ppt.dispose();

Presentation ppt = new Presentation();
ppt.loadFromFile(inputFile);
Rectangle2D.Double audioRect = new Rectangle2D.Double(220, 240, 80, 80);
IAudio audio=ppt.getSlides().get(0).getShapes().appendAudioMedia(inputFile_1, audioRect);
// Set the start trimming time 8 seconds
audio.setTrimFromStart(8000f);
// Set the end trimming time 13 seconds
audio.setTrimFromEnd(13000f);
ppt.saveToFile(outputFile, FileFormat.PPTX_2016);
ppt.dispose();

Presentation presentation = new Presentation();
presentation.loadFromFile("data/test.pptx");
Double[] widths = new Double[]{100d, 100d, 150d, 100d, 100d};
Double[] heights = new Double[]{15d, 15d, 15d, 15d, 15d, 15d, 15d, 15d, 15d, 15d, 15d, 15d, 15d};
// Add a table
ITable table = presentation.getSlides().get(0).getShapes().appendTable(
    (float) presentation.getSlideSize().getSize().getWidth() / 2 - 275, 90, widths, heights);
// Set overall table background transparency to 50% (0.0 = opaque, 1.0 = fully transparent)
table.getFill().setTransparency(0.5f);
// Customize the fill color of the cell at row 0, column 0 to blue
table.get(0, 0).getFillFormat().setFillType(FillFormatType.SOLID);
table.get(0, 0).getFillFormat().getSolidColor().setColor(Color.BLUE);
presentation.saveToFile("result.pptx", FileFormat.PPTX_2016);

int firstColumn = doc->GetBookmarks()->FindByName(L"t_insert")->GetFirstColumn();
int lastColumn = doc->GetBookmarks()->FindByName(L"t_insert")->GetLastColumn();

intrusive_ptr<TableStyle> tableStyle = Object::Dynamic_cast<TableStyle>(
    doc->GetStyles()->Add(StyleType::TableStyle, L"TestTableStyle1")
);
tableStyle->GetBorders()->SetColor(Color::GetBlue());
tableStyle->GetBorders()->SetBorderType(BorderStyle::Single);
tableStyle->SetHorizontalAlignment(RowAlignment::Center);

intrusive_ptr<Table> table = sec->AddTable();
table->ResetCells(1, 1);
table->GetRows()->GetItemInRowCollection(0)
    ->GetCells()->GetItemInCellCollection(0)
    ->AddParagraph()->AppendText(L"Aligned to the center of the page");
table->SetPreferredWidth(PreferredWidth::FromPoints(300));
table->ApplyStyle(tableStyle);

sec->AddParagraph()->AppendText(L"");
tableStyle = Object::Dynamic_cast<TableStyle>(
    doc->GetStyles()->Add(StyleType::TableStyle, L"TestTableStyle2")
);
tableStyle->SetLeftIndent(55);
tableStyle->GetBorders()->SetColor(Color::GetGreen());
tableStyle->GetBorders()->SetBorderType(BorderStyle::Single);

table = sec->AddTable();
table->ResetCells(1, 1);
table->GetRows()->GetItemInRowCollection(0)
    ->GetCells()->GetItemInCellCollection(0)
    ->AddParagraph()->AppendText(L"Aligned according to left indent");
table->SetPreferredWidth(PreferredWidth::FromPoints(300));
table->GetFormat()->SetStyle(tableStyle);

intrusive_ptr<TableStyle> tableStyle = Object::Dynamic_cast<TableStyle>(
    doc->GetStyles()->Add(StyleType::TableStyle, L"TestTableStyle1")
);

tableStyle->GetBorders()->SetColor(Color::GetBlack());
tableStyle->GetBorders()->SetBorderType(BorderStyle::Double);
tableStyle->SetRowStripe(3);
tableStyle->GetConditionalStyles()->GetItem(TableConditionalStyleType::OddRowStripe)
    ->GetShading()->SetBackgroundPatternColor(Color::GetLightBlue());
tableStyle->GetConditionalStyles()->GetItem(TableConditionalStyleType::EvenRowStripe)
    ->GetShading()->SetBackgroundPatternColor(Color::GetLightCyan());
tableStyle->SetColumnStripe(1);
tableStyle->GetConditionalStyles()->GetItem(TableConditionalStyleType::EvenColumnStripe)
    ->GetShading()->SetBackgroundPatternColor(Color::GetLightPink());

table->ApplyStyle(tableStyle);
table->GetFormat()->SetStyleOptions(TableStyleOptions::ColumnStripe);

tableStyle = Object::Dynamic_cast<TableStyle>(
    doc->GetStyles()->Add(StyleType::TableStyle, L"TestTableStyle3")
);
tableStyle->SetLeftIndent(55);
tableStyle->GetBorders()->SetColor(Color::GetGreen());
tableStyle->GetBorders()->SetBorderType(BorderStyle::Single);
tableStyle->SetHorizontalAlignment(RowAlignment::Right);

table = sec->AddTable();
table->ResetCells(1, 1);
table->GetRows()->GetItemInRowCollection(0)
    ->GetCells()->GetItemInCellCollection(0)
    ->AddParagraph()->AppendText(L"Aligned according to left indent");
table->SetPreferredWidth(PreferredWidth::FromPoints(300));
table->GetFormat()->SetStyleName(L"TestTableStyle3");

document->GetStyles()->GetItem(L"Normal")->RemoveSelf();

intrusive_ptr<Document> doc = ConvertUtil::GetNewEngineDocument();
intrusive_ptr<DocumentNavigator> navigator = new DocumentNavigator(doc);
doc->LoadFromFile(inputFile.c_str());
navigator->MoveToDocumentStart();
navigator->Writeln(L"Test insert at DocumentStart");
navigator->Writeln(L"Test insert without move");
navigator->MoveToDocumentEnd();
navigator->Writeln(L"Test insert at DocumentEnd");

doc->SaveToFile(outputFile.c_str(), FileFormat::Docx);
doc->Close();

// Insert an equation
sheet.getEquations().addEquation(11, 0, 100, 100, "x_{1}^{2}");

// Retrieve an equation
String mathML = sheet.getEquations().get(0).exportMathML();
String latex = sheet.getEquations().get(0).exportLaTeX();

// Update an equation
IXlsEquation equation1 = sheet.getEquations().get(0);
equation1.updateByLaTeXText("\\begin{pmatrix} \r\n  1 & 0 \\\\ \r\n  0 & 1 \r\n \\end{pmatrix} \r\n \\left(x-1\\right)\\left(x+3\\right)");

worksheet.getCellRange("A2").setFormula("=F.INV(0.99, 100, 200)");

worksheet.getCellRange("A2").setFormula("=T.INV.2T(0.05, 10)");