In this video the author shows how to sign PDF files and create digital appearances. To do this open any document where there is a place provided to digitally sign it. Now double click that area and you will be shown a pop up menu that helps you to sign the document. Now if you already have a digital sign prepared you can go ahead and sign the document. If not there is an option to create a new sign and this video shows the procedure of how to get it done. Using this feature now you can digitally sign the documents and also create it's appearance. This video demonstrates the features of Adobe Acrobat where you can sign PDF files digitally and also create appearances of it.