I have an image that I use as a button with a link on it. I have a "tip" (set in the image properties) that is supposed to say "click to download", but the tip doesn't display when I hover over the image.
The "Tip" is translated by D.H.E. to the "ALT" HTML Image attribute. Many time ago D.H.E. created the "ALT" and the "TITLE" attributes for Tip, actually only the "ALT" is created because "TITLE" is not W3C.
Browsers uses "ALT" in different ways, the right one should be to use it instead of pictures when using a Textual Browser; the ALT tag is used also by search engines to index sites.