Specifies whether the certificate status is checked when a digital signature is signed. The certificate status can be checked against a certificate revocation list (CRL) or an Online Certificate Status Protocol (OCSP) response.The signing party must have access to the Internet to retrieve the CRL or OCSP response from the appropriate server.The addRevocationInfo property does not have a default value so that Acrobat can override it if the value is not specified.Reference_Syntax.addRevocationInfo = “required | optional | none”