DocuSign has engineered a new enhancement to its document-signing interface to accommodate those borrowers who use slow Internet connections, such as dial-up Internet service providers. The company estimates that 61 million, or 49 percent of total Web users, continue to rely on low-bandwidth connections. Brokers or agents that want to offer e-sign need software that allows low-bandwidth borrowers to download DocuSign documents with as much speed as possible, the company said. It’s also possible to…