An annotation associates an object such as a note, sound, or text with a location on a page of a document.
Readiris 17 offers an Annotate Option that allows you to add annotations in your documents before you export them into a PDF format. That function can be useful in a revision process.
Other Output formats than PDF do not support annotations. Those annotations are fully compatible with Adobe Reader. The best result cannot be guaranteed with any another PDF viewer.
Before exporting your document as PDF, a digital signature can be included via the Export Options / PDF.