Would just like to confirm something:
When setting up an internal link ‘hotspot’, the “Annotations” window that pops up – where you are able to set the “Link type: Link Within PDF” does not appear to allow one to enter any text into the top text field. Similarly, it doesn’t appear to allow for the setting of the color/fill color, or any of the other settings, for that matter.
Am I correct in assuming that one should first set up a ‘normal’ Annotation (i.e. one of the ‘rectangle/oval/note/text’ annotation options), and then create the PDF-link hotspot over the top of the initial annotation, in order to provide a visual target to be clicked to fire the link?