Web page addresses and e-mail addresses turn into links automatically.
Lines and paragraphs are automatically recognized. The <br /> line break, <p> paragraph and </p> close paragraph tags are inserted automatically. If paragraphs are not recognized simply add a couple blank lines.
Data Collaborative integrated an e-signature into my app. It was a great experience and their product is top notch. I would recommend their products over others simply because they have a one time purchase model and their product works flawlessly.