As you already learned, when you convert a document into PDF format, navigation devices in the form of thumbnails and bookmarks are created for you. You can, however, exceed the limitations of these rudimentary navigation devices by creating links.
When you create a link, you create an area in the document that, when a viewer pauses their cursor over the hotspot, the cursor icon becomes a hand with a pointing finger—the same thing that happens when you pause your cursor over a link on a web page. You can create links for text or images in a PDF document or create any other kind of link anywhere in the document. The links you create can be visible or invisible.
Links give you tremendous flexibility. You can create links that change ...