## Sign(*Stream, Stream, [CertificateHolder](../../certificateholder/), [SignOptions](../../signoptions/)*) {#sign_1} Signs source document using given [`CertificateHolder`](../../certificateholder......Dot, Docx, Dotx, Docm, Dotm, Odt, Ott. **Output will be written...Dot, Docx, Dotx, Docm, Dotm, Odt, Ott. ```csharp public static...