Document doc = new Document();
Section section = doc.AddSection();
Spire.Doc.Documents.Paragraph paragraph = section.AddParagraph();
Spire.Doc.Fields.TextRange farEastLayout = paragraph.AppendText("test");
FarEastLayout style = new FarEastLayout();
style.Vertical = true;
farEastLayout.CharacterFormat.FarEastLayout = style;
doc.SaveToFile(outputFile, FileFormat.Docx);
doc.Close();

//Load template documents with existing styles
           Document temple = new Document();
           temple.LoadFromFile("temple.docx");
           //Load markdown file
            Document doc = new Document();
           doc = new Document(@"Doc.md");
           //Copy styles from template documents
           doc.CopyStylesFromTemplate(temple);
           //Save
           doc.SaveToFile(@"Doc.docx", Spire.Doc.FileFormat.Docx2016);

Document doc = new Document();
            doc.LoadFromFile(inputFile);
            RevisionInfoCollection revisionInfoCollection = doc.GetRevisionInfos();
            StringBuilder sb = new StringBuilder();
            foreach (RevisionInfo revisionInfo in revisionInfoCollection)
            {
                if (revisionInfo.RevisionType == RevisionType.FormatChange)
                {
                    if (revisionInfo.OwnerObject is Spire.Doc.Fields.TextRange)
                    {
                        TextRange range = (TextRange)revisionInfo.OwnerObject;
                        sb.AppendLine("TextRange:" + range.Text + "\r\n");
                        doc.RevisionsView = RevisionsView.Original;
                        sb.AppendLine("Original style：" + "isBold：" + range.CharacterFormat.Bold + ";" + "TextColor：" + range.CharacterFormat.TextColor + "；HighlightColor：" + range.CharacterFormat.HighlightColor + "；FontName：" + range.CharacterFormat.FontName + "；UnderlineStyle：" + range.CharacterFormat.UnderlineStyle + "\r\n");
                        doc.RevisionsView = RevisionsView.Final;
                        sb.AppendLine("Final style：" + "isBold：" + range.CharacterFormat.Bold + ";" + "TextColor：" + range.CharacterFormat.TextColor + "；HighlightColor：" + range.CharacterFormat.HighlightColor + "；FontName：" + range.CharacterFormat.FontName + "；UnderlineStyle：" + range.CharacterFormat.UnderlineStyle + "\r\n");
                    }
                }
            }
            File.WriteAllText(outputFile, sb.ToString());
            doc.Close();

Document doc = new Document();
      doc.CompatibilityOptions.UlTrailSpace = false;
      doc.CompatibilityOptions.AdjustLineHeightInTable = true;
      doc.CompatibilityOptions.SpaceForUL = true;
      doc.CompatibilityOptions.ApplyBreakingRules = true;
      doc.CompatibilityOptions.DoNotExpandShiftReturn = false;
      doc.CompatibilityOptions.OverrideTableStyleFontSizeAndJustification = false;
      doc.CompatibilityOptions.DoNotAutofitConstrainedTables = true;
      doc.SaveToFile("outputFile");

Document doc = new Document();
    doc.LoadFromFile("inputtFile");
    Spire.Doc.Settings.CompatibilityOptions options = doc.CompatibilityOptions;

Document doc = new Document();
            doc.LoadFromFile(inputFile);

            // Set properties
            doc.CompatibilityOptions.UlTrailSpace = false;
            doc.CompatibilityOptions.AdjustLineHeightInTable = true;
            doc.CompatibilityOptions.SpaceForUL = true;
            doc.CompatibilityOptions.ApplyBreakingRules = true;
            doc.CompatibilityOptions.DoNotExpandShiftReturn = false;
            doc.CompatibilityOptions.OverrideTableStyleFontSizeAndJustification = false;
            doc.CompatibilityOptions.DoNotAutofitConstrainedTables = true;
			// Set FileFormat when saving to preserve effects
            doc.SaveToFile(outputFile_after, FileFormat.Docx2016); 

            // Using version compatibility will reset previously set properties
            Spire.Doc.Settings.CompatibilityOptions options = doc.CompatibilityOptions;
            doc.CompatibilityOptions.OptimizeForWordVersion(WordVersion.Word2016);
            PrintCompatibilityOptions(options, outputFile);
            doc.Close();

Workbook wb = new Workbook();
wb.loadFromFile("input.xlsx");

// Create export options
MarkdownOptions options = new MarkdownOptions();

// Set whether to save images using relative paths
options.setSavePicInRelativePath(true);

// Set whether to format hyperlinks as Markdown reference-style links
options.setSaveHyperlinkAsRef(true);

wb.saveToMarkdown("output.md", options);

Presentation presentation = new Presentation();
presentation.LoadFromFile(inputFile);

foreach (ISlide slide in presentation.Slides)
{
    foreach (Spire.Presentation.IShape shape in slide.Shapes)
    {
        if (shape is SlidePicture)
        {
            SlidePicture ps = shape as SlidePicture;
            // Compress the image: remove cropped areas (true) and set target resolution to 150 DPI (commonly used for web display)
            ps.PictureFill.CompressImage(true, 150f);
        }
    }
}
presentation.SaveToFile(outputFile, FileFormat.Pptx2013);

presentation.SaveToImage(int pageIndex, int dpiX, int dpiY);

PdfDocument newPdf = new PdfDocument();
PdfPageBase page = newPdf.Pages.Add();
Spire.Pdf.Graphics.PdfFont font = new PdfFont(PdfFontFamily.Helvetica, 10f);
SizeF textSize = font.MeasureString("sample");

RectangleF rect = new RectangleF(50,50, textSize.Width, textSize.Height);
Spire.Pdf.Annotations.PdfFreeTextAnnotation textAnnotation = new Spire.Pdf.Annotations.PdfFreeTextAnnotation(rect);

textAnnotation.Text = "sample";
textAnnotation.Subject = "subject";
textAnnotation.Font = font;
Spire.Pdf.Annotations.PdfAnnotationBorder border = new Spire.Pdf.Annotations.PdfAnnotationBorder(8);
textAnnotation.Border = border;
textAnnotation.LineEndingStyle = Spire.Pdf.Annotations.PdfLineEndingStyle.None;
textAnnotation.Size = new SizeF(textSize.Width * 1.5F, textSize.Height * 1.5F);
textAnnotation.StringFormat.Alignment = PdfTextAlignment.Center;
textAnnotation.StringFormat.LineAlignment = PdfVerticalAlignment.Middle;
page.Annotations.Add(textAnnotation);
newPdf.SaveToFile(result);