public float IndentationAfter {get; set;}

// Create a new document.
using (var document = DocX.Create("Test.docx"))
{
    // Create a new Paragraph.
    Paragraph p = document.InsertParagraph("Line 1\nLine 2\nLine 3");
            
    // Make the content of this Paragraph flow right to left.
    p.Direction = Direction.RightToLeft;
            
    // Indent this entire Paragraph from the right.
    p.IndentationAfter = 36f;
    
    // Save all changes made to this document.
    document.Save();
}