Thanks BJ for explaining this for all the folks who "need to know." Useful information.
One step further is "imagemapping."
It is possible to make one image link to several pages, depending on where the image is clicked. You simply specify which areas of the image should link to where.
If you have a large image with several components, like the images on the ABHP home page, you can add alt text and links to those "multi-purpose" images. BJ added those for us here at ABHP - look at our home page at the second image down, mouse over and when the alt text pops up, you can click and be taken to another page.
The poor mans "imagemapping" instructions and utility are located here: