PDF Mosaic: How to add text field to PDF document

using PDFMosaic;
using System;
 
namespace Buttons
{
    class TextFields
    {
        static void Main()
        {
            PDFDocument document = new PDFDocument();
            PDFPage page = new PDFPage(PDFPaperFormat.A4);
 
            PDFEditBox edit1 = new PDFEditBox(20, 40, 100, 25, "edit1");
            edit1.Text = "Simple text";
 
            PDFEditBox edit2 = new PDFEditBox(20, 70, 100, 25, "edit2");
            edit2.Text = "password";
            edit2.BorderStyle = PDFBorderStyle.Dashed;
            edit2.Password = true;
 
            PDFEditBox edit3 = new PDFEditBox(20, 100, 100, 50, "edit3");
            edit3.Multiline = true;
            edit3.Font.Size = 8;
            edit3.Text = "The quick brown fox jumps over, the lazy dog.";
 
            page.Annotations.Add(edit1);
            page.Annotations.Add(edit2);
            page.Annotations.Add(edit3);
 
            document.Pages.Add(page);
            document.Save("TextFields.pdf", true);
        }
    }
}