public PdfFormField addResetButton(string name, string caption, string value, BaseFont font, float fontSize, float llx, float lly, float urx, float ury)
        {
            PdfAction    action = PdfAction.createResetForm(null, 0);
            PdfFormField button = new PdfFormField(writer, llx, lly, urx, ury, action);

            setButtonParams(button, PdfFormField.FF_PUSHBUTTON, name, value);
            drawButton(button, caption, font, fontSize, llx, lly, urx, ury);
            addFormField(button);
            return(button);
        }