Access Key (alt+a)
Special Characters (alt+s)
Title Tag (alt+g)
<a href=" " accesskey=" "><strong>A</strong>ccess (alt+a)
<alt =" ">
If the image says something in, say, a special font, the alt should be only what the image says. If it's a spacer image or not needed for understanding, leave the alt blank. Screen readers will ignore it. But keep in the alt, because if you don't, screen readers will read the URL of the image.